Thread: Help me for repeating decimal numbers plz

hi all,how can I repeat decimal numbers to print out?
for example:
1/6=0.1666.. repeating cycle is 6 and cycle length is 1
5/7=0.71428571428571...repeating cycle is 714285 and cycle length is 6
but
1/250=0.00400..repeating cycle is 0 and cycle length is 1

I hope anyone can help me out!Thanx in advance!!

Well, it is a contest problem...
oringinal problem set is here:

http://isaac.lsu.edu/class/udv/v2/202.html

Hope someone can help me, thanks!

I can think of solution just doing long decimal division, but this would
be very slow.

Originally posted by Nick
I can think of solution just doing long decimal division, but this would
be very slow.

but how can i find the repeat decimals?