18÷3×6 90-47+24
38-32÷4 72÷(25-17)
42-(8+16) 72÷8×7 (63-21)÷7
59-(22+18)
21+42÷7
6×3÷9
40÷(26-21)
89-72÷8 6×6÷9 4×(40÷5)
