conversations.from: human
conversations.value: Gina is considered a bad tipper because she tipped 5%. If good tippers tip at least 20%, how many more cents than normal would Gina have to tip on a bill of $26 to be considered a good tipper?
  Solve it.
conversations.from: assistant
conversations.value: First convert the bill amount to cents: $26 * 100 cents/dollar = 2600 cents
  Then multiply that amount by 5% to find the amount Gina normally tips: 2600 cents * 5% = 130 cents
  Then multiply the bill amount by 20% to find the amount of a good tip: 2600 cents * 20% = 520 cents
  Then subtract the good tip amount from the bad tip amount to find how much more Gina needs to tip: 520 cents - 130 cents = 390 cents