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Ricky Pak is 5' 7".
40 cm / 2m = 40 cm / 200 cm = 40/200 = 1/5
Haktan Pak is 183 cm.
Vol = 10 cm * 5 cm * 40 cm = 2,000 cm3
5 - (40/7) = - 5/7
(5 - 40)/7 = -5