A product is sold at 120 yuan after a 20% discount. what is the original price of this item
一种商品打八折后卖120元．这种商品的原价是多少
<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">120 / (4/5)</gadget>
<output>150</output>

<result>150</result>