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]: ['2895', '8095', 'y', '1927', '4827']
[EX A]: 17744

[EX Q]: ['Y', 'X', 'd', 'N', '1877', '2865', 'M', '1249', '9385', 'v', 'o', 'P', 'P', '6029']
[EX A]: 21405

[EX Q]: ['1591', 'v', '8967', '7783', 'v', 'j', 'L', 'i', '5119', 'N', '2507', 'j', 'A', 'y', '2681', '8961', 'H', '2187', 'h', '5677']
[EX A]:
45473