The sum of three consecutive odd numbers is 129, what is the largest of them
三个连续奇数的和是129，其中最大的是多少
<gadget id="calculator">129 - 2 - 4</gadget>
<output>123</output>

<gadget id="calculator">1 + 1 + 1</gadget>
<output>3</output>

<gadget id="calculator">123 / 3</gadget>
<output>41</output>

<gadget id="calculator">41 + 4</gadget>
<output>45</output>

<result>45</result>