If there is a fraction in which denominator is multiple of 5, then try to make denominator in form of 10, 100, 1000 etc by multiplying appropiate number and multiple same number in numenator. then place decimals. you will get the answer.
If you have a fraction 67/125 then multiply 8 in numenator as well as denomenator. you will get 536/1000 = 0.536
Enjoy!