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.
['9155', 'C', 'J', '6241', 's', '1471', '4529', 'H', '9235', 'O', 'e', 'q', '9955', '6665', 'Y', '827', 'p', 'D', '2045', '2167']