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.

['2013', 'S', 's', '9353', 'b', 'u', '6687', '5429', '3545', '7269']
34296

['6255', '8457', 'V', 'z', '4405', 'X', '9267', '5329', 'I']
33713

['3655', '1349', '6519', '1019', 'v', '4811', '8609', '9147', '8225', '2665', '2627', '5839']

54465