There are 1800 kilograms of apples in the fruit store. After selling (1/5) of them, the weight of the remaining apples is 40% less than the weight of pears. How many kilograms of pears are there in the fruit store?
水果店有苹果1800千克，卖出它的(1/5)后，剩下的苹果的重量比梨的重量少40%，水果店有梨多少千克？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">40 / 100</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">(4/5) / (3/5)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">1_800 * (4/3)</gadget>
<output>2_400</output>

<result>2_400</result>