hi all

am new to excel 2007 and have a problem i cant solve as yet.
i've tried the help in excel and office online but cant find what am looking
for.

the problem is am trying to calculate V.A.T AT 15% OF A TOTAL.

lets say there was £120 with V.A.T all ready included how would i calculate
the V.A.T IN THE £120.

any help would be greatly appreciated and i thank you inadvance for your
response.

paul.