Help with Formulas and Count when <=

Hi all,

I am working on building a card that displays a count of cases that are less than 1, 2 and 7 days old from creation date. Currently using this formula for case age:

SUM(UNIX_TIMESTAMP(CAST(NOW() AS DATETIME)) - UNIX_TIMESTAMP(CAST(`Created Date` AS DATETIME))) / 86400 

This returns a decimal form in days which is what we want.

Next looking to do a count of cases that fall under 1 day using the calculation above to distinguish how old they are.

I've tried using this equation"

(CASE
WHEN (SUM(UNIX_TIMESTAMP(CAST(NOW() AS DATETIME)) - UNIX_TIMESTAMP(CAST(`Created Date` AS DATETIME))) / 86400) <= 1 THEN 1
ELSE 0
END)

(CASE
WHEN (SUM(UNIX_TIMESTAMP(CAST(NOW() AS DATETIME)) - UNIX_TIMESTAMP(CAST(`Created Date` AS DATETIME))) / 86400) <= 2 THEN 1
ELSE 0
END)

(CASE
WHEN (SUM(UNIX_TIMESTAMP(CAST(NOW() AS DATETIME)) - UNIX_TIMESTAMP(CAST(`Created Date` AS DATETIME))) / 86400) <= 7 THEN 1
ELSE 0
END)

With no luck. Is there a solution in beastmode or does this need to be done in our warehouse with SQL