A rose is 5 yuan, the price of a lily is three times that of a rose, how much is a lily.
一枝玫瑰花5元钱，一枝百合花的价格是一枝玫瑰花的3倍，一枝百合花多少元．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>