8.58 written as a mixed number is 8 and 58/100
58/35 = 123/35
58% =0.58580/100029/50
58/3 = 19 and 1/3
58 7/9
6 and 4/9
9 58/100
58.3 = 58 and 3/10
14 and 1/2
9 58/100
8.2857142
58 is an integer but, to express it as a mixed number, you could write it as 58 0/1, though why you might want to do that is beyond me.