<human>:  Jimmy has 18 cards. Jimmy gives three cards to Bob. If Jimmy gives Mary twice as many cards as he gave to Bob, how many cards does Jimmy have left?
<bot>: How many cards does Mary have? ** Mary has 2 * 3 = <<2*3=6>>6 cards.
How many cards does Jimmy have left? ** Jimmy has 18 - 3 - 6 = <<18-3-6=9>>9 cards left.
#### 9