Three people, A, B, and C, start from the same place at the same time and walk around the lake. Two people, B and C, are walking in the same direction, and A, B, and C are walking away from each other. A walks 40 meters per minute, B walks 38 meters per minute, and C walks 36 meters per minute. After starting out, A and B meet C and meet for 3 minutes. How many meters is it to go around the lake?
有甲、乙、丙三人同时同地出发，绕湖行走．乙、丙两人同方向行走，甲与乙、丙相背而行．甲每分钟走40米，乙每分钟走38米，丙每分钟走36米，出发后，甲和乙相遇3分钟和丙相遇，绕湖一周是多少米．
<gadget id="calculator">40 + 38</gadget>
<output>78</output>

<gadget id="calculator">36 + 40</gadget>
<output>76</output>

<gadget id="calculator">76 * 3</gadget>
<output>228</output>

<gadget id="calculator">38 - 36</gadget>
<output>2</output>

<gadget id="calculator">228 / 2</gadget>
<output>114</output>

<gadget id="calculator">78 * 114</gadget>
<output>8_892</output>

<result>8_892</result>