To find fractions that are equivalent, just divide both the numerator and denominator by numbers that both go into 625 and 1000. If you wanted the answer in simplified form it would be 5/8. You divide both numbers by 125 (their GCF) and get 5/8. 5/8 is just one answer. You could also say 25/40 or if you wanted a decimal equivalent then you would say .625.