How to calculate 5.3 times 7.5 minus 7.5 times 3.3

How to calculate 5.3 times 7.5 minus 7.5 times 3.3

5.3 times 7.5 minus 7.5 times 3.5
=7.5x(5.3-3.3)
=7.5x2
=15
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