A bag of rice is eaten (1/5), and there are 20 kilograms left. How much does this bag of rice weigh? What is the correct column
一袋大米吃了(1/5)，还剩20千克，这袋大米有多重？正确的列式是多少
<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 / (4/5)</gadget>
<output>25</output>

<result>25</result>