A batch of apples is shipped to the store, 20% of the total number is sold on the first day, 32% of the total number is sold on the second day, and 48 kilograms more are sold on the second day than on the first day. How many kilograms are there in this batch of apples?
商店运来一批苹果，第一天卖了总数的20%，第二天卖了总数的32%，第二天比第一天多卖48千克，这批苹果一共有多少千克．
<gadget id="calculator">32 / 100</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(8/25) - (1/5)</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">48 / (3/25)</gadget>
<output>400</output>

<result>400</result>