There is a road between a certain school and a certain factory. The school sent a car to the factory at 2:00 p.m. to pick up a model worker who came to the school to give a report. It took 1 hour to go back and forth. The model worker left the factory at 1:00 p.m. and walked towards the school. On the way, he encountered a car picking him up. He got in the car and drove to the school. He arrived at the school at 2:40 p.m. It is known that the car travels 60 kilometers per hour, how many kilometers per hour does the model worker travel.
某校和某工厂之间有一条公路．该校下午2点派车去该厂接一位劳模来校做报告，往返需1小时．这位劳模下午1点钟便离开工厂步行向学校走来，途中遇到接他的汽车，便立刻上车驶向学校，在下午2点40分到校．已知汽车每小时行驶60千米，这位劳模每小时行多少千米．
<gadget id="calculator">60 / 8</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>