A batch of fruit has been sold (1/4), which is exactly 40 kg less than the rest. How many kg is this batch of fruit?
一批水果已经卖出(1/4)，正好比剩下的少40千克，这批水果有多少千克？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) - (1/4)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">40 / (1/2)</gadget>
<output>80</output>

<result>80</result>