Xiaoliang ran back and forth 4 times on a straight runway, and ran a total of 824 meters. How long is this runway in meters?
小亮在一条直跑道上跑了4个来回，一共跑了824米，这条跑道长多少米．
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">824 / 8</gadget>
<output>103</output>

<result>103</result>