human
Tom cannot afford a normal doctor, so he goes to a discount clinic that is 70% cheaper.  It takes two visits, though, instead of 1.  A normal doctor charges $200 for a visit.  How much money does he save?
assistant
How much was each visit cheaper? ** Each of Tom's visits was 200*.7=$<<200*.7=140>>140 cheaper
How much did Tom pay for each visit? ** So he paid $200 - $140 = $<<200-140=60>>60 per visit
How much did Tom pay in total? ** That means he paid $60 * 2 = $<<60*2=120>>120
How much money did Tom save? ** So he saved $200 - $120 = $<<200-120=80>>80
#### 80