Really basic formula question -- line #s in formula?

This is my first experience with formulas in Excel.

I want column W to show the sum of columns B, H, and Q. As I understand it, that means the formula in cell W7 should be =B7+H7+Q7
But is there a general way to set this up so I can copy and paste the formula and have it automatically select the cells on its own line?

I'm running Microsoft 365, under win 10 22H2.

Not too surprisingly, others had asked similar questions and the solutions posted worked.
So this is solved but I don't know how to mark it solved.

Thanks!