25 is.
75
Yes. The remainder cannot be more that the divisor but there is no issue with it being greater than the quotient. For example, if you divide 5 by 3, 5/3 = 1 and remainder 2 (out of 3) So you get quotient = 1, remainder = 2.
10+c
3
probably...................(n+3) -------- 4
10+c 3
3.9474
3.9474
(n/-2) + 10 = 3
n/10+8
2 divided by 3 + x.