There are 180 kilograms of rice in the cafeteria, which is 20% more than the weight of flour. How many kilograms of flour are there?
食堂里有大米180千克，比面粉的重量多20%．面粉有多少千克？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">180 / (6/5)</gadget>
<output>150</output>

<result>150</result>