A piece of clothing sells for 120 yuan after a 20% discount. How much is the original price of this piece of clothing? What is the correct formula
一件衣服打8折后卖120元，这件衣服的原价是多少钱？正确的算式为多少
<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>