The original price of a piece of clothing is 120 yuan, and the manufacturer sells it at a discount of 20% during the event. How much is this clothing cheaper than before?
一件服装原价120元，厂家搞活动时打八折出售，现在这件衣服比原来便宜多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">120 * (4/5)</gadget>
<output>96</output>

<gadget id="calculator">120 - 96</gadget>
<output>24</output>

<result>24</result>