Multiply output after each loop

I have a for loop which contains if else statements. I want the product of values after each for loop. Im currently displaying the product outside if loop and inside for loop. But after first for loop, it gives a product of previous output and the new output. But I want individual product outputs in each loop. How can I do that please?

[Birdman]

Can you share your code? Otherwise how do you expect us to help you?