Xiao Ming and Xiao Jun are classmates, and they play running games between classes. The two ran from the midpoint of a straight runway to both ends of the runway at the same time, and returned separately after reaching both ends. The two met at (3/5) the full length of the runway. At this time, Xiao Ming ran 12 meters longer than Xiao Jun ． How long is this runway in meters?
小明和小军是同班同学，课间两人玩跑步游戏．两人从一条直跑道的中点同时向跑道的两端跑去，到两端后各自返回，两人在跑道全长的(3/5)处相遇，这时小明比小军多跑12米．这条跑道长多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(1/2) + (3/5)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/2) + (2/5)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(11/10) - (9/10)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">12 / (1/5)</gadget>
<output>60</output>

<result>60</result>