7,5dasawarsa + 216dm3+12.500cm3

1. 7,5 dasawarsa = 10 x 7,5 = 75 tahun
2. 216 dm³ + 12500 cm³ = (216 x 1) + (12500 x 0,001)
                                       = 216 + 12,5
                                       = 228,5 liter