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]: ['T', '721', '6555', 'g', 'y', 'U', '3053', 'A', '9663']
[A]: 19992


[Q]: ['1709', 'S', 'w', '7725', 'Z', '7755', '8081', '897', 'N', '4449', 'F', 'F', 'M', 'y', 'B', 'h', 's', 'l', 's', '415']
[A]: 31031


[Q]: ['C', '2715', '9335', 'r', 'l', 'd', 'T', '7707', 'I', 'f', 'z', 'M', 'E', '9713', 'h', 'm', 'S', 'V']
[A]:
29470