The fruit store shipped a batch of fruit, and after selling (3/4), there was 450kg left. How many kilograms of fruit did the fruit store ship?
水果店运来一批水果，卖出(3/4)后还剩450kg，水果店运来水果多少千克？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">450 / (1/4)</gadget>
<output>1_800</output>

<result>1_800</result>