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]: ['w', '7301', '9411', 'z', 'g', 'X', '1045', 'l', 'F', 'M', 'R', '7957', 'e', '5145']
[A]: 30859


[Q]: ['9403', 'u', '4159', 'w', '3467']
[A]: 17029


[Q]: ['8485', 'Z', '4123', 'y', 'o', '7063', '6101', '5887', '8489', '1273', 'g', 'd', '5909', 'P']
[A]:
47330