Xiaoxiao's family spent 240 yuan at the "Delicious" restaurant, and got a "10% discount" at the checkout, how much yuan was saved.
笑笑一家在"美味"餐厅消费240元，结账时打了"九折"，省了多少元．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">240 * (1/10)</gadget>
<output>24</output>

<result>24</result>