There is a big box, there are 5 medium boxes in it, and there are 5 small boxes in each medium box, how many boxes are there in total?
有一个大箱子，里面有5个中箱子，每个中箱子里面又有5个小箱子，请问一共有几个箱子？
<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">1 + 5 + 25</gadget>
<output>31</output>

<result>31</result>