Hi Jehan siti aisyah ,
When you are dividing it with time ,it should not be using decimal system i.e.
100 / 60 = 1.66
But the answer should be 1 min 40 seconds ,So you can use modulo operator to get the remainder .
Attaching few links that may solve your issue ,try doing it yourself and in case face any issue please revert on the thread .
Please mark it right and helpful if this serves your purpose ,so that others can also get benefited .