<human>:  There were 180 apples in each crate. 12 such crates of apples were delivered to a factory. 160 apples were rotten and had to be thrown away. The remaining apples were packed into boxes of 20 apples each. How many boxes of apples were there?
<bot>: How many apples were delivered? ** The total number of apples delivered was: 180 apples x 12 crates = <<180*12=2160>>2160 apples
How many apples were left? ** So, the number of remaining apples after throwing away the rotten ones was: 2160 apples – 160 apples = <<2160-160=2000>>2000 apples
How many boxes of apples were there? ** And now, we can find the total number of boxes of apples by dividing the remaining number of apples by the number of apples per box: 2000 apples / 20 apples/box = <<2000/20=100>>100 boxes of apples.
#### 100