The sum of 4 consecutive odd numbers is 136, what is the smallest odd number among them?
4个连续奇数的和是136，其中最小的一个奇数是多少？
<gadget id="calculator">136 - 2 - 4 - 6</gadget>
<output>124</output>

<gadget id="calculator">1 + 1 + 1 + 1</gadget>
<output>4</output>

<gadget id="calculator">124 / 4</gadget>
<output>31</output>

<result>31</result>