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', '5201', '2787', 'z', '9465', 'X', 'X', '4017', '8305', 'y', '6897', 'y', '6045', '9863', 's', 'd', '3611', 'l', 'd']
[EX A]: 56191

[EX Q]: ['4811', 'Q', '2289', 'N', 'I', '7681', 'z', '8179', '3359', '5299', 'R', 'z', '8697', '5781', '4803', '2715', '6511', '1371']
[EX A]: 61496

[EX Q]: ['3203', 'n', '5351', '8285', 'e', 'F', 'A', 'N', '6385', 'e', '2139', 'h', 'H', 'T', 'x', 'E', '1103']
[EX A]:
26466