The original price of a stamp album is 120 yuan, and now it is sold at 40% off the original price. How much cheaper is it?
一本集邮册原价120元，现在按原价的六折出售，便宜了多少元？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">120 * (3/5)</gadget>
<output>72</output>

<gadget id="calculator">120 - 72</gadget>
<output>48</output>

<result>48</result>