Modulo operator

Question

I typed,
>> print(-28 % 10)
Output:- 2

>> print(28 % -10)
Output:- -2

>> print(-28 % -10)
Output:- -8

Anybody please explain how this is working??
How we get -8 here

Answer 1

"The % (modulo) operator yields the remainder from the division of the first argument by the second. The numeric arguments are first converted to a common type. A zero right argument raises the ZeroDivisionError exception. The arguments may be floating point numbers, e.g., 3.14%0.7 equals 0.34 (since 3.14 equals 4*0.7 + 0.34.) The modulo operator always yields a result with the same sign as its second operand (or zero); the absolute value of the result is strictly smaller than the absolute value of the second operand."

http://docs.python.org/reference/expressions.html