Five consecutive even numbers, the fourth number is 4 more than the sum of the first number and the fifth number (1/4), what is the largest of the five numbers?
五个连续的偶数，其中第四个数比第一个数与第五个数的和的(1/4)多4，五个数中最大的是多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">8 * (1/4)</gadget>
<output>2</output>

<gadget id="calculator">4 - 6</gadget>
<output>-2</output>

<gadget id="calculator">2 + (-2)</gadget>
<output>0</output>

<gadget id="calculator">1 - (1/4) - (1/4)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">0 / (1/2)</gadget>
<output>0</output>

<gadget id="calculator">0 + 8</gadget>
<output>8</output>

<result>8</result>