and B are 10 kilometers apart. A bus is driving from A to B, and Xiao Ming is also riding a bicycle along the same route from A to B. The bus stops every 500 meters and stops for 1 minute at each stop. If the speed of the bus is 25 kilometers per hour, and the speed of Xiao Ming's bicycle is 15 kilometers per hour, how many times did Xiao Ming and the bus arrive at the same place at the same time on the way?
甲乙两地相距10千米．一辆公共汽车从甲地开往乙地，同时小明也骑车沿同一路线，从甲地前往乙地．公共汽车每500米设一站，每站停1分钟．如果公共汽车的速度是每小时25千米，小明骑车的速度是每小时15千米，那么在途中，小明和这辆公共汽车有多少次同时到达同一地点．
<result>4</result>