There are 300 kilograms of apples in the fruit shop, which is 2/5 less than the delivered Sydney. How many kilograms of delivered Sydney?
水果店里有苹果300千克，比运来的雪梨少(2/5)，运来雪梨多少千克？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">300 / (3/5)</gadget>
<output>500</output>

<result>500</result>