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135 !
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50 + 63 + 72 + 63 + 137 + 172 = 557
210
For 63: 3 and 7 For 72: 2 and 3
72/63 = 24/21 = 8/7
6 plus 6 plus 63 plus 63 plus 36 plus 36 is equal to 210.