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]: ['5899', '229', 'm', '3347', 'k', 'q', 'g', '2755', '8727', '2035', '823', '6835', '9271', 'Q']
[A]: 39921


[Q]: ['A', '9979', '8723', '1131', 'i', 'p', 'M']
[A]: 19833


[Q]: ['a', '4255', 'K', 'o', '9637', 'K', 'N', 'W', '8691', 'k', '9233', 'r', 'Q', 'h', '7997', '9465', '9345', 'B', 'C', '2937']
[A]:
61560