What is 20% less than 36 kg?
比36千克少20%是多少．
<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">36 * (4/5)</gadget>
<output>144/5 = around 28.8</output>

<result>144/5 = around 28.8</result>