The original price of a product is 62.5 yuan, and it is sold at a 20% discount. How much should it be sold for?
一件商品原价62.5元，打八折出售，应该卖多少元
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">62.5 * (4/5)</gadget>
<output>50</output>

<result>50</result>