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.

['4159', 'H', 'h', 'W', 'w', 'i', 'G', 'l', 'j', '5467', '9219', 'j', 'q', 'n', '5465', '6197', 'J', 'y']
30507

['V', 'h', '5549', 'K', 's', '8337', 'Y', '497', 'z', 'T', '4467', '6333', 'M', '1573', 'y', 'O', '5499', 's', 't', '6205']
38460

['6123', 'x', '4927', '3501', 'H', '4211', '9617']

28379