The sum of three consecutive even numbers is 24, what is the smallest of these three numbers?
三个连续偶数的和是24，这三个数中最小的是多少．
<gadget id="calculator">24 - 2</gadget>
<output>22</output>

<gadget id="calculator">2 + 22</gadget>
<output>24</output>

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

<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<result>6</result>