Type 'DecimalJsLike' is not assignable to type 'Value'.

model Order {
  id          Int         @id @default(autoincrement())
  [...]
  orderItems  OrderItem[]
  paymentId   String      @unique
}

model OrderItem {
  id          Int     @id @default(autoincrement())
  orderId     Int
  order       Order   @relation(fields: [orderId], references: [id])
  [...]
  priceNetto  Decimal @db.Decimal(10, 2)
}

let finalPrice = new Prisma.Decimal(0);
for (let item of orderItemCreateManyOrderInput) {
  finalPrice = finalPrice.add(item.priceNetto);
}