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]: ['B', '9189', '3691', '2869', '1525', 'd', 'H', 'P', '8613', 'b', 'r', '5289', 'V', '6433', '8733', 'K', '8105', '1041', 'U', 'L']
[EX A]: 55488

[EX Q]: ['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']
[EX A]: 30507

[EX Q]: ['3001', '2871', '9999', '8435', 'K', '8459', 'r', '9613', 'V', 'C', 'B', 'I', 'I', '9171']
[EX A]:
51549