A stool is 25 yuan, and the price of a table is three times that. How much is a table more expensive than a stool?
一张凳子25元，一张桌子的价钱是它的3倍，一张桌子比一张凳子贵多少元？
<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">75 - 25</gadget>
<output>50</output>

<result>50</result>