A certain product is sold at a 20% discount, which is 50 yuan cheaper than the original price. What is the original price of this product?
某种商品打八折出售，比原来便宜了50元，这件商品原价多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">50 / (1/5)</gadget>
<output>250</output>

<result>250</result>