Whenever you see the words "divided by", try long division.
In this case, you'll get 25.02 .
78 divided by 5 and how do you work it out = 15.6
91
150% of 1251 = 1251*150/100 = 1876.5
8.2
The positive integer factors of 1251 are: 1, 3, 9, 139, 417, 1251
33
57.2
0.016
612
0.4
0.4
1