A question on an excel assignment

Can someone help me with which formula I can use?

Thank you

In G37 calculate the labour costs for that activity by looking up the appropriate rate in the Labour Costs sheet and multiplying it by the Man Hours. Use the standard rate except where there is a " Y " in the Specialist column, for these cases use the Specialist rate. Copy your formula down. \begin{tabular}{l|r|r|} & Specialist Extra: & 0.4 \\ \hline Trades & & \\ \hline Fitting & Standard Rate & Specialist Rate \\ \hline Electrical & $66.50 & $90.11 \\ \hline Plumbing & $93.50 & $126.69 \\ \hline Building Works & $108.50 & $147.02 \\ \cline { 2 - 3 } & $61.90 & $83.87 \\ \hline \end{tabular} LABOUR COSTS