4 × ? = 6924 ÷ 15
17 2/3 × 1 17/106= ?
51 × ? = 1632
4567.8 + (14 × 9.8) = 5038 − ?
27% of 450 − ?% of 375 = 76.5
12.5 × 6.7 × 4.2 = ?