There are 25 consecutive even numbers, the largest even number is 5 times the smallest even number. So, what is the sum of these 25 consecutive even numbers?
有25个连续偶数，其中最大的偶数是最小的偶数的5倍．那么，这25个连续偶数的和是多少．
<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<gadget id="calculator">50 - 2</gadget>
<output>48</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">12 + 60</gadget>
<output>72</output>

<gadget id="calculator">25 / 2</gadget>
<output>25/2 = around 12.5</output>

<gadget id="calculator">72 * (25/2)</gadget>
<output>900</output>

<result>900</result>