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.

['o', '8089', '2159', '943', '1255', 'w', 'Y', '3723', 'n', '7767', '2209', 'F', 'c', 'J', '5259', '4427', 'n', 'U']
35831

['U', '5607', 'Q', 'j', 'I', '3745', '3031']
12383

['I', '2267', 'P', '3231', 'T', '3429', '6013', '7981', 'v', 's', '7479', '8157', '4051', 'y', '5049', '6429']

54086