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]: ['2765', '6767', '7645']
[A]: 17177


[Q]: ['1969', 'm', 'Y', 'N', '7331', 'J', 'b', '2485', 'x']
[A]: 11785


[Q]: ['751', 'V', '8025', '7537']
[A]:
16313