The integer 202020 is a multiple of 91. For every positive integer n, show how n additional 2's may be inserted into the digits of 202020 so that the resulting (n+6)-digit integer is also a multiple of 91. For example, a possible way to do this when n=5 is \underline{2} 2020 \underline{2} 20222 (the inserted 2's are underlined).