How the borders have changed over time

From 1797 to roughly 1820, the eastern two-thirds of Washington Square Park was a potter’s field, where the bodies of poor and unidentified New Yorkers were unceremoniously dumped in mass graves. For just $4,500, New York City purchased the plot so impoverished locals could afford a decent spot to rest in peace.

You can use this code as the custom calculation script of Sum16:

 var total = 0;
 for (var i=1; i<=15; i++) total+=Number(this.getField("Milage 54mileRow"+i).valueAsString);
 event.value = total * 0.54;