A bag of flour is eaten (4/5), and there are 8 kilograms left. How many kilograms are eaten?
一袋面粉，吃了(4/5)，还剩8千克，吃了多少千克．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">8 / (1/5)</gadget>
<output>40</output>

<gadget id="calculator">40 - 8</gadget>
<output>32</output>

<result>32</result>