For a commodity, the original price is 20% less than the current price, and the current price is 1028 yuan. How much is the original price?
一件商品，原价比现价少20%，现价是1028元，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">1_028 * (4/5)</gadget>
<output>4_112/5 = around 822.4</output>

<result>4_112/5 = around 822.4</result>