The prime factors are 2 x 3 x 3 x 5.
90
90
multiply the number by .90 or just.9 like 90% of 100 is 90
Multiply 90 x .63= 56.7 is 63% of 90
66150
4050
63X90=5670
12
270
There are 16 ounces in a pound, so multiply 16 x 90 to get 1440 ounces in 90 pounds.
45 and 2.
Multiply by 3