The school cafeteria bought 1500kg of rice, which was 1/4 more than the flour. How many kilograms of flour did the cafeteria buy?
学校食堂买来大米1500㎏，比买来的面粉多(1/4)．食堂买来面粉多少千克？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1_500 / (5/4)</gadget>
<output>1_200</output>

<result>1_200</result>