58=0.625 ; 1225=0.48 ; 56=0.8333333333333333
Simply divide the numerator by the denominator and it will be in decimal form
For example if i wish to convert 7/8 to decimal form i will perform the following: Seven divided by eight = .875
58=0.625 ; 1225=0.48 ; 56=0.8333333333333333