After reducing 5000 kilograms of rice (1/5), and then increasing it by 20%, what is the result?
把5000千克大米减少(1/5)后，再增加20%，结果是多少．
<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">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">5_000 * (4/5) * (6/5)</gadget>
<output>4_800</output>

<result>4_800</result>