8
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
45.7143
32 billion divided 320 million = 0.1
2.9531
24.6154
320
320
320
One billion divided by 320 million equals 3.125
0.0067