Apples account for 40% of Xiaohua's fruit basket, and her mother buys 12 oranges and puts them in the fruit basket. At this time, apples account for 25%. How many apples are there in Xiaohua's fruit basket?
小华家的水果篮里苹果占40%，妈妈又买来12个桔子放入果篮中，这时苹果占25%，小华家的水果篮中有多少个苹果．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / (1/4)</gadget>
<output>4</output>

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

<gadget id="calculator">1 / (2/5)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">4 - (5/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">12 / (3/2)</gadget>
<output>8</output>

<result>8</result>