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.

['4201', '6445', '4009', 'q']
14655

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

['t', 'B', 'I', 'u', '3969', '1207', 'E', '6999', 'b', '8107', 'S']

20282