<human>:  John writes 3 stories every week. Each short story is 50 pages. He also writes a novel that is 1200 pages each year. Each sheet of paper can hold 2 pages. Over 12 weeks, how many reams of paper does he need to buy if a ream contains 500 sheets?
<bot>: How many pages does John write in a week? ** He writes 3*50=<<3*50=150>>150 pages a week
How many pages does John write in a year? ** That means he writes 150*52=<<150*52=7800>>7800 pages of short stories a year
How many pages does John write in a year? ** So he writes 7800+1200=<<7800+1200=9000>>9000 pages a year
How many sheets of paper does John need? ** So he needs 9000/2=<<9000/2=4500>>4500 sheets of paper
How many reams of paper does John need? ** That means he needs 4500/500=<<4500/500=9>>9 reams of paper
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