I'm looking for a formula that will divide the perimeter of a building by 20 or 25. I work as a drafter in Lightning Protection and I'm building an APP for Sales to give the customer a price on the spot. The only problem is each inside corner of the rectangle, no matter how big must have a "Lightning Rod". So as the perimeter grows those 4 spots are consistent, but the number of "Lightning Rods"/20 or 25 will be ever changing...any ideas?
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