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:
['d', '7305', '8903', 'b', '7687', '6393', '6939']
answer:
37227


question:
['d', '5571', '6455', '4287', 'I', 'U', 'M', '8303', '8893']
answer:
33509


question:
['5967', 'm', '6699', 'W', 'O', 'n', '1769', '4545', '5085', 'X', 'o', 'a', '9501', '6667', '75', '3517']
answer:

43825