FLOORDIV function consumes two NUMBER values, convert them to LONGs and pushes back largest LONG value that is less than or equal to the algebraic quotient.
Since 2.6.0, this function can be applied to a LIST of numerical values and a numerical value. Considering this function as
F, the result of
$a [ $b $c ] F is
[ $a $b F $a $c F ] and the result of
[ $a $b ] $c F is
[ $a $c F $b $c F ].
Since 2.7.1, this function can be applied to a GTS of numerical values. This is very similar to how this function works on LISTs, considering the values of the GTS. In that case the result is a GTS.