There are a bunch of fruits, of which apples account for 45%. If after adding 32 oranges, apples account for only 25%, how many apples are there in the pile of fruits?
有一堆水果，其中苹果占45%．若再放32个橘子后，苹果就只占25%，则原来这堆水果中有苹果多少个
<gadget id="calculator">0.45 - 0.25</gadget>
<output>0.2</output>

<gadget id="calculator">8 / 0.2</gadget>
<output>40</output>

<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">40 * (9/20)</gadget>
<output>18</output>

<result>18</result>