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]: ['M', '5201', '2787', 'z', '9465', 'X', 'X', '4017', '8305', 'y', '6897', 'y', '6045', '9863', 's', 'd', '3611', 'l', 'd']
[A]: 56191


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


[Q]: ['M', '2299', 'y', 'x']
[A]:
2299