How To Add The Amount Existing In Different Filenames

Jul 20, 2010

i am having 2 different txt files saved namely a.txt and a1.txt and my data in that is

a.txt 23ABCD444455510000GFHDHHD

a1.txt 2323143333344435.678gfdsfgskf

Now i would like to add those 2 values which are in bold and i have display the sum..

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