-70
The answer is either 11 or once (because after subtracting it once, you are no longer subtracting from 77).
Also, this assumes you stop when you reach zero - there is no requirement in the question to do so.
It is 9 times when it is subtracted from 42 and until reached 0
7 * 77 = 539
-1064
7 times, with a remainder of 0
2 can fit into 77, 38 times with a remainder of 1.
-2835
-156
11 times. 11*7= 77
7 can be subtracted from 49 only one time.
It is 9 times when it is subtracted from 42 and until reached 0
Exactly 11 times
7 * 77 = 539
-1064
7 times, with a remainder of 0
77
77 times with a remainder of 1
2 can fit into 77, 38 times with a remainder of 1.