If K and M interchanged their positions then how many seats are there between M and R?

Study the following information carefully and answer the below questions. Certain numbers of people are sitting in a row facing north. X and N are immediate neighbors of each other. Only two persons sit between X and R. R sits fifth to the right of Z, who is not an immediate neighbor of N. There are no seats to the right of Q. S sits third to the left of Z and is third from one of the extreme ends of the line. V sits second to the right of K and is an immediate neighbor of Z. M sits exactly between R and
V. More than three persons sit between M and N, who sits third to the left of Q.