Detailed Instructions: 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.
Q: ['9113', 'Z', 'm', '4017', 'f', '5049', '3791', '3661', 'm', '6735', '2333', 'e', 'S', '2421', '1505', '9965', '443']
A:
49033