Alternate entry when multiplier is 0

[blueshevy]

Hi and sorry if that Title isn't clear.

I need a formula (I think probably in the IF/OR area?) whereby the result in one cell (C3) is the result of multiplying two other cells (C2 x B3) - simple right?
What I need though is to not do the calculation if C2 is 0, rather to just insert the value of B3.

So in the attached I need C7 to be 2 and C8 to be 6 etc, i.e. start the running total again after a 0 entry

Thanks
blue

[Phuocam]

Try this in C2:

=IF(N(C1)=0,B2,C1*B2)

[blueshevy]

Perfect! Thank you