Answer:
9 shelters
Step-by-step explanation:
Subtract 64 from the total number of coats to get the total amount of coats donated to shelters:
388 - 64 = 324
Then, divide 324 by 36, since that's the minimum number of coats given to each shelter:
324 ÷ 36 = 9
So at least 9 shelters received coats.