I'm new to excel so this might be a simple question. I have around 100 rows with 7 columns. Out of those, 4 column needs to have the value computed by 3rd and 2nd columns' value of the same row.

I know that this can be done using =C1*B1 and then copy paste this value to the next column. But I don't this is the easiest way. So please help me out with this and thanks in advance.