Triple IF statement

I am positive I am close with this but I am having issues putting this together.

=IF(G18=1, ROUND(H8*H18,2)*E18), IF(G18=2,ROUND(H9*H18,2)*E18), IF(G18=3, ROUND(H10*H18,2)*E18)

Basically G18 can have 1 of 3 values (1,2,3)
Depending which value is entered the value of the hourly rate that is charged to the client will change.
This formula used ROUND(H8*H18,2)*E18 represents

ROUND (HourlyRate*TotalHours,2digits)*Quantity

I feel like each instance should have a false statement but I am not sure how to write it.
Thank you

I think perhaps the below would be a suitable approach:

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IF wise:

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