There is a pile of apples, 40% is taken away in the first time, and 12 kilograms are taken away in the second time compared with the first time. There are 28 kilograms of apples left in the pile. How many kilograms are in the pile of apples?
有一堆苹果，第一次拿走40%，第二次比第一次多拿12千克，这堆苹果还剩28千克，请问这堆苹果原来有多少千克？
<gadget id="calculator">12 + 28</gadget>
<output>40</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">40 / (1/5)</gadget>
<output>200</output>

<result>200</result>