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.

['5233', 'i', 'Z', 'v', '4531', 'j', '61', '1725', '5915', '1677', 'F', 'K', 'M', 'Z']
19142

['2871', '1337', '3771', '4671', 'l', '3785', 'V', 'z', 'R', 'u', '6097', 'R', '4297', 'd', '6339', 'Y', 'V', '5873', '7399']
46440

['o', '7313', '7409', 'h', '241', 'd', '2043', '2785', '6251']

26042