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:
['Q', 'v', 't', '223', 'm', 'l', 'c', 'M', 'b', '2227', 'P', 'e', 'n', 'f', 'S', '2205', '3517', '5545']
answer:
13717


question:
['M', '9387', '7125', 'c', '1295', 'X', 'l', '9867']
answer:
27674


question:
['7169', 'Z', 'e', 'x', 'h', '3789', '857', '1461', 'h', 'm', 's', '1103', '5461']
answer:

19840