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]: ['l', 'B', 'Y', '7543', '5091', '1917']
[A]: 14551


[Q]: ['d', '6851', 'o', '5521', 'l', '3911', 'w', '1005', 'e', '3323', 'r', '7311', '4377']
[A]: 32299


[Q]: ['z', 'G', 'z', 'I', '9949', 'z', '7679', 'C', '8427', 'E', 'M', 'm', '1073']
[A]:
27128