Exact prim allowance on land?

Hi,

Could somebody please be so kind as to post the exact formula, as used by the server-side source code, to calculate the number of prims on a parcel of a given size?

Most formulas I have seen, such as those based on proportions (such as 117:512), fail for certain values. (eg, 117:512 fails for 65536; 65536 / 512 = 128, 128 * 117 = 14976, but 65536sqm actually has 15000). Evidently the server must have a formula that never fails - would it be possible for it to be posted?

Thank you,
Yumi.

The formula is:

prim_limit = integer( parcel_area * region_limit / region_area )

Note that the prim_limit must be a "whole number" so the decimal part of the "real number" inside the parentheses is discarded.