How can I multiply qty and price= total and the whole total?

How can I multiply qty and price= total and the whole total?

https://form.jotform.com/aorca/order-form

Unfortunately, it is not possible to perform calculations with dynamic fields such as Matrix Dynamique, Configurable List or Infinite List widgets. Instead of Matrix Dynamique, you may use Spreadsheet widget or Input Table (Matrix) field where you can perform calculations.

Let us know if you need any further assistance.