Dilution of broth culture, need help! 10 pts!?

Dilution 1 is one part culture to 100 parts water ie 100 times more dilute. The next one is 1000 times more dilute, the next 10000 and the last 100000. Multiply those so you have 100x1000x10000x100000 to give you 1x10^14 which you multiply your final cell count so you have 84x10^14 or 8.4x10^15