R is the remainder and it is a constant because according division algorithm degree of remainder is always less than degree of divisor and greater than Or equal to 0. So it is 0.
Q(x) is quotient.
Now, if we particularly put x = r in the equation, we get.
Thousands grou the thousands group. 913,256 256 being the ones group 913 being the thousands group. the name of the period with 913, is the thousands group p