<human>:  Jack has a grove with 4 trees by 5 trees. It takes 6 minutes to clean each tree. He gets help to clean the trees so it only takes half as long. How many hours did he spend cleaning trees?
<bot>: How many trees were there? ** There were 4*5=<<4*5=20>>20 trees to clean
How many minutes did it take to clean the trees? ** So it took 20*6=<<20*6=120>>120 minutes
How many hours did it take to clean the trees? ** That is 120/60=<<120/60=2>>2 hours
How many hours did he spend cleaning trees? ** So he spent 2/2=<<2/2=1>>1 hour cleaning
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