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]: ['6849', 'I', 'p', 's', 'L', '4757', 'j', 'x', 'm', 'P', '5237', '1105', '9015', '9279', 'Q']
[A]: 36242


[Q]: ['1869', 'q', '5919', 'D', '7733', '2641', 'h', '1327']
[A]: 19489


[Q]: ['W', 'i', '7827']
[A]:
7827