human
John buys 3 dress shirts. They sell for $20 each. He also has to pay 10% tax on everything. How much did he pay in total?
assistant
How much did the shirts cost before tax? ** The shirts cost 3*$20=$<<3*20=60>>60 before tax
How much did the tax cost? ** The tax cost $60*.1=$<<60*.1=6>>6
How much did John and his wife pay in total? ** So in total they paid $60+$6=$<<60+6=66>>66
#### 66