64
This expression is invalid unless you left out parentheses in your question:20 = 2² ÷ 1 + 6 x 320 = 4 ÷ 1 + 6 x 320 = 4 + 6 x 320 = 4 + 1820 ≠ 22
320
320
32 billion divided 320 million = 0.1
45.7143
320
320
0.05
24.6154
2.9531
320