8016 is an integer, and there is no sensible way to represent it as a fraction.
3/4
0.23 = 23/100
8/40 = 1/5
No but as a decimal 9/20 is equivalent to 0.45
No. 7 is a prime number which means it is only divisible by one and itself. 40 is not divisible by seven. (In other, shorter words, 7 and 40 have no common factor.)
8016/1000
3/4
8.016:=8016/1000 or 1002/125 in fraction
13/100
0.23 = 23/100
8.016 = 8016/1000 = 1002/125
72/100 = 18/25
8/40 = 1/5
2/3 cannot be simplified further.
0.05 = 5/100 = 1/20
No but as a decimal 9/20 is equivalent to 0.45
8.016 = 8016/1000 = 1002/125 or 82/125