I need to count how many instances of 123 are found today (4/3)
I also need to count how many instances of 123 are found in the past week
(probably just need to add ""&(TODAY()-7))
The # of rows may be 100, 1000, or 10000. 1/2 of the formulas I tried dont
allow arrays of the entire column.

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Sample data

A B
123 4/3/2006 13:45
456 4/3/2006 12:34
789 4/3/2006 11:23
123 4/3/2006 10:01
456 4/2/2006 11:11
456 4/2/2006 10:46
789 4/2/2006 10:23

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I tried using "="&(TODAY()) in many formulas, but the syntax is always wrong.