Auto populate groups per entered number

[jbrino]

Hi,
I am working on a sheet, where there are "n" number of pieces. Each piece has 4 values that need to be entered and then two values are calculated. I need to have those 4 value cells and the calculations repeat based on the "n" number of pieces, or the number of times repeated that I enter. Can someone help! Thanks so much!

 

[jbrino]

https://ibb.co/h5Ubzn, here is a link to an image of what I am working on!