ADDING FUEL SURCHARGE & HST

ADDING FUEL SURCHARGE & HST

Hello

I need to invoice the customer showing both Fuel Surcharge & ON HST separately.   The FSC should be 20% of the subtotal.   The HST should be applied to sum of Subtotal + FSC 

So it should be like:
SUBTOTAL:  100.00
FSC (20%):   20.00
HST (13%):  $15.60

How do I go about do this?