Kimmy went to play with her friends. If Kimmy rolls a die, say 13 times, her score will be the addition of all the numbers appearing on the die each time. Kimmy got 'a' 2 times, 'b' 5 times and 'd' 6 times. What is the total score of Kimmy?
(2a) + (5b) + (6d)
Total score of Kimmy = 2a + 5b + 6d