In this task, you are given an input list A. You need to find all the elements of the list that are numbers and calculate their sum.
--------
Question: ['T', '8333', 'C', 'Z', 'n', '1419', 'd', '3205', 'D', '1187', 'd']

Answer: 14144


Question: ['2691', '3861', '7087', '4661', '6527']

Answer: 24827


Question: ['L', '4829', '7881', 'y', 'Y', '9205', 'H', 'K', 'g', 'M', 'y', '951', '4981', '5719', 'X', '3791', '3125']

Answer:
40482