curl --request GET \
  --url https://us-red-property-data.p.rapidapi.com/api/v1/mortgage/loan-calculation \
  --header 'x-rapidapi-key: <api-key>'

{
  "success": true,
  "cost": 1,
  "data": {
    "monthly_cost": 7920,
    "total_payment": 2239407,
    "monthly_cost_items": [
      {
        "amount": 6221,
        "display_name": "Principal & interest",
        "type": "PRINCIPAL_AND_INTEREST"
      }
    ],
    "amortization_schedule": [
      {
        "interest": 62092,
        "principal": 12555
      }
    ]
  }
}