This funtion works for me, if there are no letters behind numbers

=IF(ISNUMBER(B7),(IF(B74000, VLOOKUP(B7,Sheet1!A2:B263,2), "S")), "S")

but some of the numbers have a letter or two behind them, which I want to
ignore (eg. 4123HG i want to recognize as 4123)....

Any Help?

jeremy

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