60/360 x 21 x 21 x 22/7=••••••(pls do it step by step.)

= 60/360 x 212 x 22/7
= 1/6 x 441 x 22/7
= 73.5 x 22/7  
= 231

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603602121227 = 1632122= 1/22122=12111= 231. Hope it helps ......
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