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.

['t', 'x', '5629', 'k', '2003', 'v', '541', 'l', 'v', '7983', '677', '6173', 'z', 'J', 's', 'u', '2187', 'Y']
25193

['b', 'W', 'V', 'R', '3761', 'U', '4553', '1803', 'W', '7775', '1067', 'Y', 'D', '3159']
22118

['2037', 'Z', 'T', '6991', '5361', '1569', '4713', 'l', '8651', 'Q', '5603', '7529', '9401', '5241', 'E']

57096

