A batch of apples is shipped from the fruit shop, and after selling (2/5), there are still 450 kilograms left. How many kilograms of apples are there in the fruit shop?
水果店运来一批苹果，卖出(2/5)后，还剩下450千克，水果店运来的苹果有多少千克？
<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">450 / (3/5)</gadget>
<output>750</output>

<result>750</result>