A bag of rice, after eating 20%, there are 24 kilograms left, how many kilograms is this bag of rice? (Solution of column equation)
一袋大米，吃了20%后，还剩24千克，这袋大米有多少千克？(列方程解)
<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">24 / (4/5)</gadget>
<output>30</output>

<result>30</result>