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.

[Q]: ['q', 'I', 'E', 'M', 'T', 'i', '8719', 'r', 'V', '9759', 'I', '1793', 'Q', 'P', '5263', 'I', 'O', '8603', 'y']
[A]: 34137


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


[Q]: ['a', '5225', 'K', '6685', '5219', 'T', 't', 'm', 'G', '6583', '8753', 'N', '3205', 'p', '9293', '851', 'v', '5419', 'D', 'f']
[A]:
51233