Two people, A and B, are riding towards each other from two places at the same time. A's speed is 20 kilometers per hour, and B's speed is 18 kilometers per hour. When the two meet, they are 3 kilometers away from the midpoint. How many kilometers are they traveling?
甲乙两人同时从两地骑车相向而行，甲的速度是每小时20千米，乙的速度是每小时18千米，两人相遇时距中点3千米，全程有多少千米．
<gadget id="calculator">20 + 18</gadget>
<output>38</output>

<gadget id="calculator">20 - 18</gadget>
<output>2</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">38 * 3 * 1</gadget>
<output>114</output>

<result>114</result>