Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
James does chores around the class.  There are 3 bedrooms, 1 living room, and 2 bathrooms to clean.  The bedrooms each take 20 minutes to clean.  The living room takes as long as the 3 bedrooms combined.  The bathroom takes twice as long as the living room.  He also cleans the outside which takes twice as long as cleaning the house.  He splits the chores with his 2 siblings who are just as fast as him.  How long, in hours, does he work?

### Response:
It takes 3*20=<<3*20=60>>60 minutes to clean the living room
So it takes 60/60=<<60/60=1>>1 hour to clean the living room
The bathroom takes 1*2=<<1*2=2>>2 hours to clean
So in total, it takes 1+1+2=<<1+1+2=4>>4 hours to clean the house
It takes 4*2=<<4*2=8>>8 hours to clean the outside
So in total it takes 4+8=<<4+8=12>>12 hours to do chores
He splits it 1+2=<<1+2=3>>3 ways
So he works 12/3=<<12/3=4>>4 hours
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