A has 240 yuan, and B's money is 15 yuan less than A's double, how much money does B have?
甲有240元钱，乙的钱数比甲的2倍少15元，乙有多少元．
<gadget id="calculator">240 * 2</gadget>
<output>480</output>

<gadget id="calculator">480 - 15</gadget>
<output>465</output>

<result>465</result>