Xiao Gang ran a circle on the 560-meter circular runway. He ran 8 meters per second in the first half and 6 meters per second in the second half. How many seconds did it take Xiao Gang for the second half of the run?
小刚在560米的环形跑道上跑了一圈，前半时每秒跑8米，后半时每秒跑6米，小刚跑后半程用了多少秒？
<gadget id="calculator">40 * 8</gadget>
<output>320</output>

<gadget id="calculator">560 / 2</gadget>
<output>280</output>

<gadget id="calculator">320 - 280</gadget>
<output>40</output>

<gadget id="calculator">40 / 8</gadget>
<output>5</output>

<gadget id="calculator">40 + 5</gadget>
<output>45</output>

<result>45</result>