四又三分之二 乘 0.72 除以0.15乘四分之一
=三分之14×3×0.24÷0.15×0.25
=14×0.24÷0.15×0.25
=14×0.8×0.3÷0.3÷0.5×0.5×0.5
=14×0.8×0.5
=14×0.5×0.8
=7×0.8
=5.6