In a mountaineering competition, Zhang Jun walked up the mountain 44 meters per minute and reached the top of the mountain in 20 minutes. Then return along the original road, and reach the foot of the mountain in 22 minutes. How many meters did Zhang Jun walk per minute when he went down the mountain?
在一次登山比赛中，张军上山每分钟走44米，20分钟到达山顶．然后沿原路返回，22分钟到达山脚．张军下山时每分钟走多少米？
<gadget id="calculator">20 / 22</gadget>
<output>10/11 = around 0.909091</output>

<gadget id="calculator">44 * (10/11)</gadget>
<output>40</output>

<result>40</result>