Compound Interest Calculator with monthly contribution

Hello, can you help me?

I have a question about how to create the result calculation for the Compound Interest Calculator with monthly contribution.

The fields created were:

1 - Value of the initial contribution ($)
2 - Monthly Contribution Amount ($)
3 - Monthly Interest Rate (%)
4 - Investment time in months
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5 - Final total value
Note: I am not able to calculate this value.

The formula I could think of was this one but it doesn't work.
fieldname5 * pow (1 + fieldname4, fieldname3)+ (fieldname10 * pow (1 + fieldname4, fieldname3)-1)

Link to a reference calculator: https://investidorsardinha.r7.com/calculadoras/calculadora-de-juros-compostos/

Can you help me?