$points > 2000*X && $quota < 15+X

##</code><code>##

$points/2000 > X && X > $quota-15

##</code><code>##

$points/2000 + 15 > $quota

##</code><code>##

ceil( $points/2000 ) > X && X > $quota - 15

##</code><code>##

ceil( $points/2000 ) - 1 >= X && X > $quota - 15

##</code><code>##

( ceil( $points/2000 ) - 1 ) + 15 > $quota

##</code><code>##

max( min( 24, ( ceil( $points/2000 ) - 1 ) + 15 ), 15 ) > $quota