Under normal circumstances, a taxi driver drives for t hours a day with an average speed of m km/h. It is known that he drives 2 hours less than normal on day A, and his average speed is 5 km/h slower than normal; he drives 2 hours longer than normal on day B, and his average speed is 5 km/h faster than normal. Now it is known that the taxi driver drove 120 kilometers less than the normal situation on day A. Find out how many kilometers the taxi driver drove more than the normal situation on day B.
在正常情况下，某出租车司机每天驾车行驶t小时，且平均速度为m千米/每小时．已知他在A日比正常情况少行驶2小时，平均速度比正常情况慢5千米/小时；他在B日比正常情况多行驶2小时，平均速度比正常情况快5千米/小时．现已知在A日这名出租车司机比正常情况少行驶120千米，求在B日这名司机比正常情况多行驶多少千米．
<result>140</result>