prompt: George donated half his monthly income to charity and spent $20 from the other half on groceries. If he now has $100 left, how much was his monthly income?
messages.content: George donated half his monthly income to charity and spent $20 from the other half on groceries. If he now has $100 left, how much was his monthly income?
messages.role: user
messages.content: Half his monthly income is $100+$20 = $<<100+20=120>>120
  His monthly income therefore is 2*$120 = $<<2*120=240>>240
  #### 240
messages.role: assistant