A rectangle 'A' is said to be the child of rectangle 'B' if following $3$ conditions are satisfied:

a. 'A' can be completely fit inside 'B' without A's sides touching B's sides.

b. At Least one side of 'A' should be greater (in length) than both the sides of 'B'

c. A’s and B’s sides are positive integers.

A rectangle with sides of length $22543$ units and $22541$ units has how many children?

(Note : A square is also a rectangle with equal sides)

(Note : A’s (Child) sides need not be parallel to B’s sides when A is fit inside B).