The sum of three consecutive even numbers is 36, what is the smallest one among them?
三个连续偶数的和是36，其中最小的一个是多少．
<gadget id="calculator">36 / 3</gadget>
<output>12</output>

<gadget id="calculator">12 - 2</gadget>
<output>10</output>

<result>10</result>