The grain store shipped 500 bags of flour, 20% less than the rice shipped. How many bags of rice are shipped?
粮店运来面粉500袋，比运来的大米少20%．运来大米多少袋？
<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">500 / (4/5)</gadget>
<output>625</output>

<result>625</result>