=IF(ISERROR(I11/E11*1000*5),"",I11/E11*1000*5)
or
=IF(E11=0,"",I11/E11*1000*5)
will give a blank if E11 is zero.

If you actually want the formula to return zero (despite the fact that the
answer should be infinity), then replace "" by 0 in the formula.
--
David Biddulph

"Beep Beep" wrote in message
...
I am getting the below message with the formula showing.

#DIV/0!
=I11/E11*1000*5

Can you tell me how to put the -iserror formula to make this show zero if
the cells are zero..

Thanks
Frank