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.

[EX Q]: ['M', '6989', 'I', 'w', '3591', '3067', '3883', 'C', '6049', '5723', 'j', '5989', 'C', 'R', '475', '7779', '671']
[EX A]: 44216

[EX Q]: ['9201', '5685', 'v', 'w', 'v', 'r', 'Y', 'm', 'q', 'e', 'P', '7595', 'c', 'W', 'd', '9985', 'V', '3719']
[EX A]: 36185

[EX Q]: ['3231', '4953', '2187', 'i', '9435', 'i', 'F', '9297', 'X', '4025', '9645']
[EX A]:
42773