A 200-meter-long team is advancing at a speed of 3 meters per second. The correspondent accepts the task and rushes from the head to the tail at a speed of 5 meters per second to convey the order and then immediately return to the head. How many meters has he run in total? ?
一列长200米的队伍，正以每秒3米的速度前进，通讯员接受任务，以每秒5米的速度，从排头赶到排尾，传达命令，然后立即返回排头，他一共跑了多少米？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">200 / 2</gadget>
<output>100</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">200 / 8</gadget>
<output>25</output>

<gadget id="calculator">100 + 25</gadget>
<output>125</output>

<gadget id="calculator">125 * 5</gadget>
<output>625</output>

<result>625</result>