Such a number must be combined with a unit of measurement: for example, seven and one fifth meters, seven and one fifth kilometers, seven and one fifth microns, or light-years, or astronomical units, or parsecs. The resulting length is different in each case.
No,
7 is one fifth of 35.
1 fifth
7.2
3.5
140
7.2
One yard is 36 inches so one-fifth of a yard is 36/5 = 7.2 inches (or seven and one-fifth inches).
It is 70.2
720%
36
It is 7.2