Currently it is known that 80% of customers shop at store 1 and 20% shop at store 2. while reviewing past data, suppose we find that out of all customer who shopped at store 1 in a given week, 90% remain loyal for the next week, 10% switch to store 2. on the other hand, out of all customers who shopped at store 2 in a given week, 80% remains loyal for the next week, 20% switch to store 1. what will be the proportion of customers shopping at store 1 and 2 in each of the next two weeks?