Two cars drive opposite each other from places A and B, which are 180 kilometers apart, and meet each other in 2.5 hours. Car A travels 40 kilometers per hour, how many kilometers per hour does B travel? (column equation solution)
两辆汽车从相距180千米的甲乙两地相对开出，2.5小时相遇，甲车每小时行40千米，乙每小时行多少千米？(列方程解答)
<gadget id="calculator">40 * 2.5</gadget>
<output>100</output>

<gadget id="calculator">180 - 100</gadget>
<output>80</output>

<gadget id="calculator">80 / 2.5</gadget>
<output>32</output>

<result>32</result>