128又六分之一乘以1又五分之三加71又十六分之五乘以五分之三
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原式=(128+1/6)x(1+3/5)+(71+5/16)x(3/5)
=128+1/6+128x(3/5)+71x(3/5)+(5/16)x(3/5)
=128+1/6+384/5+213/5+3/16
=128+1/6+3/16+597/5
=128+8/48+9/48+119+3/5
=247+17/48+3/5
=247+85/240+144/240
=247+229/240
=247又240分之229.
=128+1/6+128x(3/5)+71x(3/5)+(5/16)x(3/5)
=128+1/6+384/5+213/5+3/16
=128+1/6+3/16+597/5
=128+8/48+9/48+119+3/5
=247+17/48+3/5
=247+85/240+144/240
=247+229/240
=247又240分之229.
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