There is a sweater that sells for 120 yuan, which is 40% cheaper than the original price. How much is the original price? (column equation calculation)
有一款毛衣，售价120元，比原价便宜40%，原价多少元？(列方程计算)
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">120 / (3/5)</gadget>
<output>200</output>

<result>200</result>