221/75 = 2.947 hours (rounded)
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At 60 mph 221 minutes is 221 miles long.
The first ten positive integer multiples of 221 are: 1 x 221 = 221 2 x 221 = 442 3 x 221 = 663 4 x 221 = 884 5 x 221 = 1105 6 x 221 = 1326 7 x 221 = 1547 8 x 221 = 1768 9 x 221 = 1989 10 x 221 = 2210
1, 13, 17, 221.
Because 17 multiplied by 13 equals 221. So the factors of 221 are 1,13,17 and 221.
221 is divisible by 1, 13, 17, and 221.