The original price of a commodity is 100 yuan. After the price is increased by 20%, the price will be reduced by 20%. What is the current price?
一件商品原价100元，提价20%后，再降价20%，现价是多少元．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

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

<gadget id="calculator">100 * (6/5) * (4/5)</gadget>
<output>96</output>

<result>96</result>