I want to sum a column from a different sheet using the date as the condition
for the formula. I need a formula that will sum all the amounts that are
equal to or less than a specific cell E1 (which would be the date). Store 1
is the first sheet and I have 99 sheets for 99 stores. I tried the following
formula but got back -3.0559E-10 as the result. The result should have been
$18,810.90. I am not sure what I am doing wrong. Any help will be greatly
appreciated.

=SUM(IF(('Store #1'!B1:B73<=E1),'Store #1'!E1:E73))


Store # Period Step Rent
1 04/01/2008 962.70
1 05/01/2008 962.70
1 06/01/2008 962.70
1 07/01/2008 962.70
1 08/01/2008 962.70
1 09/01/2008 962.70
1 10/01/2008 962.70
1 11/01/2008 962.70
1 12/01/2008 962.70
1 01/01/2009 962.70
1 02/01/2009 962.70
1 03/01/2009 962.70
1 04/01/2009 587.77
1 05/01/2009 587.77
1 06/01/2009 587.77
1 07/01/2009 587.77
1 08/01/2009 587.77
1 09/01/2009 587.77
1 10/01/2009 587.77
1 11/01/2009 587.77
1 12/01/2009 587.77
1 01/01/2010 587.77
1 02/01/2010 587.77
1 03/01/2010 587.77
1 04/01/2010 205.34
1 05/01/2010 205.34
1 06/01/2010 205.34
1 07/01/2010 205.34
1 08/01/2010 205.34
1 09/01/2010 205.34
1 10/01/2010 205.34
1 11/01/2010 205.34
1 12/01/2010 205.34