After increasing (1/5) 25kg, then decreasing (1/5), what is the result in kg?
25㎏增加(1/5)后，再减少(1/5)，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>6/5 = around 1.2</output>

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

<gadget id="calculator">25 * (6/5) * (4/5)</gadget>
<output>24</output>

<result>24</result>