The vegetable market shipped 600 kg of Chinese cabbage, which was 1/4 more than the shipment of spinach. How many kilograms of spinach are shipped from the vegetable market?
菜市场运来大白菜600千克，比运来的菠菜多(1/4)．菜市场运来菠菜多少千克？
<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">600 / (5/4)</gadget>
<output>480</output>

<result>480</result>