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]: ['3013', '3955', 'f', '1183', '5111', '9509', '2351', '7087', 'f']
[A]: 32209


[Q]: ['2225', '1925']
[A]: 4150


[Q]: ['5359', 'N', '7405', '2969', 'J']
[A]:
15733