32:8•7+9 •(24-16) + 420 :6•5=

Решение:

1. \( 24 - 16 = 8 \)
2. \( 32 : 8 = 4 \)
3. \( 420 : 6 = 70 \)
4. \( 4 \cdot 7 = 28 \)
5. \( 9 \cdot 8 = 72 \)
6. \( 70 \cdot 5 = 350 \)
7. \( 28 + 72 = 100 \)
8. \( 100 + 350 = 450 \)

Ответ: 450