There are a bunch of apples, the number is between 20-50, and 4 points for 4 points or 9 points for 9 points can be divided exactly. Think about it, how many apples might there be in this pile?
有一堆苹果，数量在20-50个之间，4个4个分或者9个9个分，都能正好分完．想一想，这堆苹果可能有多少？
<gadget id="calculator">4 * 9</gadget>
<output>36</output>

<result>36</result>