Human: Mark collects money for the homeless. He visits 20 households a day for 5 days and half of those households give him a pair of 20s. How much did he collect? Assistant: 
How many households did Mark visit? ** He got money from 20/2=<<20/2=10>>10 households per day
How many households did Mark visit? ** So that means he got money from 10*5=<<10*5=50>>50 households
How much money did each household give? ** Each of those houses gave 20*2=$<<20*2=40>>40
How much money did Mark collect? ** So he raised 40*50=$<<40*50=2000>>2000
#### 2000