Question 44268
8583/10000=8583.0/10000
When dividing by powers of ten, just move the decimal point of the numerator backwards for every zero after the 1 in the denominator.
e.g 7/10=7.0/10=0.7
e.g 2000/1000=2000.0/1000=2

so 8583/10000=0.8583

I hope this helps.
P.S. I am trying to start up my own homework help website. I would be extremely grateful if you would e-mail me some feedback on the help you received to adam.chapman@student.manchester.ac.uk