I need my macro to do a calculation in cell h3. The calculation logic should
be:

Multiply value in cell G3 by value in cell H1. This value should then show
up in cell H3. Then I need it to do the same thing for the next row
(multiply value in cell G4 by value in cell H1 and place answer in cell H4.
I need to this to fill down for all used rows.

Thanks in advance.

Mike