The original price of a commodity is 50 yuan, the price is first reduced (1/5), and then the price is raised (1/5), what is the current price of this commodity.
一件商品原价50元，先降价(1/5)，后又提价(1/5)，这件商品现价是多少元．
<gadget id="calculator">1 / 5</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 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">50 * (4/5) * (6/5)</gadget>
<output>48</output>

<result>48</result>