n your Excel file, Copy the content in Cell D$12($not the formula$),$ and paste it in G$11.$ What value do you get?

Tip $1$: Copy the formula using the keys CTRL $+$ c and CTRL $+$ v$,$ do not type it $($in Mac, copy and paste works using the keys Command $+$ c$,$ Command$+$ v

Tip $2$: Your formula for D$12$ should be referencing B$3,$ fixing column and row. This means that if you copy the D$12$ formula, and paste it into another cell, your new formula should still be referencing B$3($use the $ symbol for row and column$)$