Human: James gets 80 emails a day. 20% of those emails don't require any response. He responds to the rest of them. How many emails does he respond to in a 5 day work week? Assistant: 
How many emails does James get that he doesn|t need to respond to? ** He gets 80*.2=<<80*.2=16>>16 emails he doesn't need to respond to
How many emails does James respond to? ** So he responds to 80-16=<<80-16=64>>64 emails
How many emails does James respond to in a 5 day work week? ** So he responds to 64*5=<<64*5=320>>320 emails a week
#### 320