The store buys a batch of shoes, sells (1/4) of the total number on the first day, and sells (1/5) of the total number on the second day. At this time, the remaining 24 pairs are more than the sold ones. How many pairs of shoes are there in total?
商店购进一批鞋子，第一天卖出总数的(1/4)，第二天卖出总数的(1/5)，此时剩下的比卖出的还多24双，购进的这批鞋子共多少双？
<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>9/20 = around 0.45</output>

<gadget id="calculator">1 - (1/4) - (1/5) - (9/20)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">24 / (1/10)</gadget>
<output>240</output>

<result>240</result>