For a bunch of apples, the first car took away (1/4), and the second car took away (1/5). The first car transports 100kg more than the second car, how many kilograms are the pile of apples in total?
一堆苹果，第一辆车运走了(1/4)，第二辆车运走了(1/5)．第一辆车比第二辆车多运100kg，这堆苹果共多少千克？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/4) - (1/5)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">100 / (1/20)</gadget>
<output>2_000</output>

<result>2_000</result>