Express 248 as the sum of 8 consecutive even numbers, what is the largest even number?
把248表示成8个连续偶数的和，其中最大的那个偶数是多少？
<gadget id="calculator">12 + 7</gadget>
<output>19</output>

<gadget id="calculator">2 * 19</gadget>
<output>38</output>

<result>38</result>