1/25 is already in a fraction. If you mean in decimals, then .04
25% = 0.25.
25
0.25
.25
18 over 25 is 0.72
125
29.5
25% = 0.25 in decimal
.25
Some decimals repeat. Some decimals go on forever. Some decimals stop. Those are called terminating decimals.
I think you mean 77/100. That would be .77 in decimals.