C++: The Monthly payment on a loan may calculate by the following formula (image attached)/

- Rate is the monthly interest rate, which is the annual interest rate divided by 12. (A

12 percent annual interest would be 1 percent monthly interest.)

- N is the number of payments

- L is the amount of the loan.

My current attempt is attached as the 3rd image, but it does not get the correct result. Guidance on what to do would be appreciated.