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]: ['C', '3133', '2183', '5793', '9305', 'd', 'g', '6501']
[A]: 26915


[Q]: ['8109', '6811', 'f', 'l', '5869', 'm', '4657', 'y', 'P', '7983', 'o', 's', 'i', 'm', '2141', '4497']
[A]: 40067


[Q]: ['4015', '7111', '5587', '5931', 'k', '3899', 'w', 'Y', 'K', 'd', 'l']
[A]:
26543