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]: ['E', '9289', 'j', '1847', 'u', 'w', 'z', '4045', '9567', '3133', '2967', 'I', '1927', 'I', 'f', 'T']
[A]: 32775


[Q]: ['D', 'm', 'P', '2433', '6731']
[A]: 9164


[Q]: ['8789', '2719', '8731', '4835', 'Y', 'W', '2449', 'x', 'M', 'N', 'o', '8549', '2003', '4083', '3467', '6049']
[A]:
51674