Help with creating simple product formula from column to column for each row.

Hello,..

I want to simply have the cells in one column be the product of cells in two other columns, and have the whole spreadsheet do this at the same time without having to put the formula into every single cell.

Example: I have a column with a quantity of an Item (column D). I have another column with the price of each item (column E). I want column (F) to be the product of column D and column E per each Row,.. i.e., 5 items (column D, row 8) x $2.00 (column E, row 8) = $10.00 (column F, row 8). uugghhh!! This just be soo simple, yet I can't find the answer anywhere,..

Thanks in advance for any help you may be able to offer,...


Kindly,

Brett