Grandpa jogs 6 laps every day, and now he has run half a lap, which takes about 2 minutes. At this speed, how much time does it take for the old man to jog every day?
老爷爷每天慢跑6圈，现在已经跑了半圈，大约用了2分钟．照这样的速度，老爷爷每天慢跑要用多少时间？
<gadget id="calculator">2 * 2 * 6</gadget>
<output>24</output>

<result>24</result>