Notes
A paint quantity calculator for a paint shop, built on Phox Calculator Builder in formula mode with every result line hidden. The walls, ceiling, area, litres, tins and cost lines feed each other in order, and Math.ceil rounds the litres up to whole 2.5 litre tins. Phox Calculator Value elements show the litres, area, tins and cost in the brand-flooded panel, so change a result name in both places together. Field widths come from each field (third, half, full) and drop to full width at 768px and below; the calculator columns setting has no effect.
