0
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The prime factors are 2 x 3 x 3 x 5.
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
12
270
4050
63X90=5670
66150
45 and 2.
Multiply by 3