IF statement that multiplies a cell if another cell in drop down ...

Hi

please see small sample attached

i have a drop down in B1

which changes to BTC and BTS

i have hours in columns E to H

in columns I to L i want the monetary value

so when i choose the drop down it should multiply these hours by the daily rate (in rows 15 and 16) based on what the drop down says

can someone help with an if condition with three conditions?

Follow this pattern:

=E3*XLOOKUP($B$1,$B$15:$B$16,$C$15:$C$16)