I am using the following formula:
=SUM(LINEST(A$3:A$6, B$3:B$6)*{61590,1})

I need to use a value from a cell rather than typing the value (61590 in the
above equation) into the formula each time. I have tried using quotes,
parentheses, brackets, etc. without any luck.

I am using Excel 2002. How is this done?

Thanks