8又5分之3×2.7+62×14%+35×0.86
=8.6×2.7+62×0.14+35×0.86
=8.6×2.7+62×0.14+3.5×8.6
=8.6×(2.7+3.5)+6.2×1.4
=8.6×6.2+6.2×1.4
=6.2×(8.6+1.4)
=6.2×10
=62