After a price reduction of 20%, the price of a jacket is 380 yuan. How much is the original price?
一件上衣降价20%后，售价380元，问原价是多少元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">380 / (4/5)</gadget>
<output>475</output>

<result>475</result>