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All you have to do is put ur number in and upside down division bracket and if it it a composite number you divide by a prime number and then if the number is even like 84 the you put 84 in the upside down division bracket and it can divide by two so the you put the number 2 to the left of or upside down division bracket and the underneath it you put you put your answer which is 42 because 84 divided by 2 is 42 abd then 42 is still even so divide by 2 and it will be 12 because 42 divided by 2 is 12 then it is still even so keep dividing by 2 and you will get 6 because 12 divided by 2 is 6 still even so divide by 2 and you will get 3 because 6 divided by 2 is 3; 3 is a prime so you can stop

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14y ago
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Q: How do you do upside down division?
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