Trouble understanding Gross sale calculation in line items

Please help me with how gross sale money is calculated in the line items of below order. It seems service charge is included in the line item total money. I need to calculate gross sale of this order by category of products excluding service charges.

{
  "id": "35YSTWrGiSf4bsm3aqgbTpoeV",
  "locationId": "CFDK8M711RK8S",
  "lineItems": [
   {
    "uid": "3996EC26-BC36-4411-B1F2-6CAD9CDA1522",
    "name": "Brunch Burrito",
    "quantity": "1",
    "note": "Bacon ",
    "catalogObjectId": "ZNGAZRDU2ZLWDAHNOV26C6B6",
    "catalogVersion": 1655060034893,
    "variationName": "Regular",
    "itemType": "ITEM",
    "appliedTaxes": [
     {
      "uid": "1E3F6FFB-240B-48C4-9DBB-2E078B1BE4C7",
      "taxUid": "6EA4845A-2E21-4C5F-BA26-6E4D83AF0EC7",
      "appliedMoney": {
       "amount": 60,
       "currency": "USD"
      }
     }
    ],
    "basePriceMoney": {
     "amount": 600,
     "currency": "USD"
    },
    "variationTotalPriceMoney": {
     "amount": 600,
     "currency": "USD"
    },
    "grossSalesMoney": {
     "amount": 715,
     "currency": "USD"
    },
    "totalTaxMoney": {
     "amount": 60,
     "currency": "USD"
    },
    "totalDiscountMoney": {
     "amount": 0,
     "currency": "USD"
    },
    "totalMoney": {
     "amount": 711,
     "currency": "USD"
    }
   },
   {
    "uid": "1F090EC9-3B9A-41CB-82DF-6EBAF0B2A2D2",
    "name": "Coffee",
    "quantity": "1",
    "catalogObjectId": "VX37HMUB5ZPAY33RHRLFXOE5",
    "catalogVersion": 1654272643355,
    "variationName": "Regular",
    "itemType": "ITEM",
    "modifiers": [
     {
      "uid": "D588D381-68DC-4D47-A1AC-210A9ED372EC",
      "catalogObjectId": "BFX75LGOBJVWOTUDFWFWJRHG",
      "catalogVersion": 1601392006087,
      "name": "Hot",
      "quantity": "1",
      "basePriceMoney": {
       "amount": 0,
       "currency": "USD"
      },
      "totalPriceMoney": {
       "amount": 0,
       "currency": "USD"
      }
     }
    ],
    "appliedTaxes": [
     {
      "uid": "FA871FB0-1992-469A-B784-7ADB6D89B7CE",
      "taxUid": "6EA4845A-2E21-4C5F-BA26-6E4D83AF0EC7",
      "appliedMoney": {
       "amount": 35,
       "currency": "USD"
      }
     }
    ],
    "basePriceMoney": {
     "amount": 350,
     "currency": "USD"
    },
    "variationTotalPriceMoney": {
     "amount": 350,
     "currency": "USD"
    },
    "grossSalesMoney": {
     "amount": 465,
     "currency": "USD"
    },
    "totalTaxMoney": {
     "amount": 35,
     "currency": "USD"
    },
    "totalDiscountMoney": {
     "amount": 0,
     "currency": "USD"
    },
    "totalMoney": {
     "amount": 415,
     "currency": "USD"
    }
   },
   {
    "uid": "D5805745-63D6-4D28-B76E-2F11419A7E68",
    "name": "Plain Waffle",
    "quantity": "1",
    "catalogObjectId": "OMAI567NVGTTGEGUA3UG7ZOU",
    "catalogVersion": 1654445276341,
    "variationName": "Regular",
    "itemType": "ITEM",
    "appliedTaxes": [
     {
      "uid": "7D14F087-5ACF-4507-B8AE-19142E1827B3",
      "taxUid": "6EA4845A-2E21-4C5F-BA26-6E4D83AF0EC7",
      "appliedMoney": {
       "amount": 39,
       "currency": "USD"
      }
     }
    ],
    "basePriceMoney": {
     "amount": 395,
     "currency": "USD"
    },
    "variationTotalPriceMoney": {
     "amount": 395,
     "currency": "USD"
    },
    "grossSalesMoney": {
     "amount": 510,
     "currency": "USD"
    },
    "totalTaxMoney": {
     "amount": 39,
     "currency": "USD"
    },
    "totalDiscountMoney": {
     "amount": 0,
     "currency": "USD"
    },
    "totalMoney": {
     "amount": 468,
     "currency": "USD"
    }
   }
  ],
  "taxes": [
   {
    "uid": "6EA4845A-2E21-4C5F-BA26-6E4D83AF0EC7",
    "catalogObjectId": "LN7JOYZXU45W4NVU7XY24QSE",
    "catalogVersion": 1602802401911,
    "name": "Sales Tax",
    "type": "ADDITIVE",
    "percentage": "10",
    "appliedMoney": {
     "amount": 134,
     "currency": "USD"
    },
    "scope": "LINE_ITEM"
   }
  ],
  "serviceCharges": [
   {
    "uid": "EC62E189-17C2-4B0C-816D-1365575858CD",
    "name": "Bagging fee",
    "catalogObjectId": "BVEDWWWXXSTGEWWHS5K2KI7A",
    "catalogVersion": 1655166702061,
    "amountMoney": {
     "amount": 75,
     "currency": "USD"
    },
    "appliedMoney": {
     "amount": 75,
     "currency": "USD"
    },
    "totalMoney": {
     "amount": 75,
     "currency": "USD"
    },
    "totalTaxMoney": {
     "amount": 0,
     "currency": "USD"
    },
    "calculationPhase": "APPORTIONED_AMOUNT_PHASE",
    "taxable": false,
    "type": "CUSTOM"
   },
   {
    "uid": "4BE73DBE-7957-4B08-ACC1-459B8AE001EC",
    "name": "Credit card processing fee ",
    "catalogObjectId": "PHE675YBPPWB2YYUVFI7C2FG",
    "catalogVersion": 1655220964580,
    "percentage": "3",
    "appliedMoney": {
     "amount": 40,
     "currency": "USD"
    },
    "totalMoney": {
     "amount": 40,
     "currency": "USD"
    },
    "totalTaxMoney": {
     "amount": 0,
     "currency": "USD"
    },
    "calculationPhase": "APPORTIONED_PERCENTAGE_PHASE",
    "taxable": false,
    "type": "CUSTOM"
   }
  ],
  "returnAmounts": {},
  "netAmounts": {
   "totalMoney": {
    "amount": 1881,
    "currency": "USD"
   },
   "taxMoney": {
    "amount": 134,
    "currency": "USD"
   },
   "discountMoney": {
    "amount": 0,
    "currency": "USD"
   },
   "tipMoney": {
    "amount": 287,
    "currency": "USD"
   },
   "serviceChargeMoney": {
    "amount": 115,
    "currency": "USD"
   }
  },
  "tenders": [
   {
    "id": "RAo22jiL3BBzEK9KH8iKK4QJvaB",
    "locationId": "CFDK8M711RK8S",
    "transactionId": "35YSTWrGiSf4bsm3aqgbTpoeV",
    "createdAt": "2022-06-19T18:55:59Z",
    "amountMoney": {
     "amount": 1881,
     "currency": "USD"
    },
    "tipMoney": {
     "amount": 287,
     "currency": "USD"
    },
    "processingFeeMoney": {
     "amount": 59,
     "currency": "USD"
    },
    "type": "CARD"
    }
  ],
  "createdAt": "2022-06-19T18:56:08Z",
  "updatedAt": "2022-06-19T18:56:08Z",
  "closedAt": "2022-06-19T18:56:08Z",
  "state": "COMPLETED",
  "totalMoney": {
   "amount": 1881,
   "currency": "USD"
  },
  "totalTaxMoney": {
   "amount": 134,
   "currency": "USD"
  },
  "totalDiscountMoney": {
   "amount": 0,
   "currency": "USD"
  },
  "totalTipMoney": {
   "amount": 287,
   "currency": "USD"
  },
  "totalServiceChargeMoney": {
   "amount": 115,
   "currency": "USD"
  },
  "square_product": [
   "SQUARE_POS"
  ]
 }