Express the number as a ratio of integers.

hi im having trouble with this question:
Q:Express the number as a ratio of integers. 9.4(78)bar so 9.4787878787878787878

what is confusing me is the 9.4, and where i should start the series at 78/10^(?)

please if someone could help me.



Homework Helper
Try multiplying it by 99. Specifically, multiply it by 100 and then subtract the original number. The repeating part should go away.
yea i think i got it
so according to the geo series a=(78/10^3) and r=(1/10^2)
it should be (94/10)+(13/165)

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