The original price of a schoolbag is 60 yuan, how much is the price after the 10% discount?
一个书包的原价是60元，打九折后的价钱是多少？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">60 * (9/10)</gadget>
<output>54</output>

<result>54</result>