Write a method that returns the sum of the right-most two blocks of two digits of the input parameter 'a'. Ignore any digits that are not in the right-most two blocks of digits. As preconditions, you may assume that 'a' will be non-negative. The previous sentences are hard to understand unless you see some examples, so here are some examples: If 'a' is 5123 you would return 74. This is because the right-most block of two digits is 23 and the NEXT right-most block of two digits is 51. The sum of 23+51 is 74. If 'a' is 923124 you would return 55. This is because you would add 24+31 which equals 55. You would ignore the 92 because you are only supposed to use the right-most two blocks of two digits.