The sum of 5 adjacent integers is 135, what is the smallest number?
5个相邻整数之和是135，那么最小的数是多少．
<gadget id="calculator">135 / 5</gadget>
<output>27</output>

<gadget id="calculator">27 - 2</gadget>
<output>25</output>

<result>25</result>