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: ['2625', '1611', 'E', '4507', '3013', '1569', 'M', '2607', '1111', 'W']

Answer: 17043


Question: ['6255', '8457', 'V', 'z', '4405', 'X', '9267', '5329', 'I']

Answer: 33713


Question: ['9619', 'j', 'g', 'V', '4061', '6525', 'f', '3361', '143', '2627', 'T', 'C', 'C', '7789']

Answer:
34125