instruction:
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.
question:
['1693', '9237', '7591', '1593', 'R', '6295', '9379']
answer:
35788


question:
['6469', '3027', 'Z', '3353', 'a', 'S', '3879', '8471', 'H', 'I', 'y', '2661', '9007', 'D']
answer:
36867


question:
['P', 'j', '9993', '7303', '1539', '1977', '6213', 't', 't', 'F', '797', 'f', 'E', 'f', 'm', 'y', '2099', '1995', '3667']
answer:

35583