Two people, A and B, run towards each other around a circular track at a constant speed, starting from the two ends of the diameter of the circle. If they start at the same time and meet for the first time when A finishes running 60 meters, and they meet for the second time when B runs 80 meters away, what is the length of the runway in meters?
甲乙两人以匀速绕圆形跑道相向跑步，出发点在圆直径的两端．如果他们同时出发，并在甲跑完60米时第一次相遇，乙跑一圈还差80米时俩人第二次相遇，求跑道的长是多少米？
<gadget id="calculator">3 * 60</gadget>
<output>180</output>

<gadget id="calculator">180 - 80</gadget>
<output>100</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">100 / 1</gadget>
<output>100</output>

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

<result>200</result>