Hi

                   

 = 21kg

 = 1.8km       7.2 ÷ 4 = 1.8

 = R84        120 ÷ 10 = 12,  7 times 12 = 84

 = 21kl         56 ÷ 8 = 7,   3 times 7 = 21

 = 36m            45 ÷5 = 9,   4 times 9 = 36 

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