51 × ? = 1632
4567.8 + (14 × 9.8) = 5038 − ?
27% of 450 − ?% of 375 = 76.5
12.5 × 6.7 × 4.2 = ?
311 × 17 − 2482 = ?
147 ÷ 5 ÷ 0.3 = ?