14/33*1 1/21=14/33*22/21=4/9
4-4/9=3 5/9
3 5/9*5 5/8=32/9*45/8=20
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14/33*1 1/21=14/33*22/21=4/9
4-4/9=3 5/9
3 5/9*5 5/8=32/9*45/8=20