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]: ['q', '6631', 'b', '4207', '7523', '9853', '9203', 'P', '5029', 'b', '2319', '4717', '2485']
[A]: 51967


[Q]: ['457', '173', '6807', 'o', '555', 'l', 's', 'Z', 'm', '3035', '1283', '5645', 'S', '8641', 'J', 'Z', 'z', 'K']
[A]: 26596


[Q]: ['1681', 'd', '7505', 'C', 'Z', '9009', 'i', '23', 'o', '2289', '5531']
[A]:
26038