Calculate sums, percentages and solve other complex mathematical problems with this Staples 12-digit display desktop calculator. Support budget-planning activities with this multifunction desktop calculator. The angled display offers easy viewing, while the 12-digit LCD screen accommodates big numbers and long decimals. Perform financial and tax calculations with ease using the cost, sell and margin functions. This Staples 12-digit desktop calculator shuts off automatically when not in use to prevent battery drain and integrates solar technology for uninterrupted use. Desktop calculator with easy-view 12-digit angled LCD display. For financial and tax calculations. Two-way power, solar and battery, perfect for day or night. Percent, backspace, tax, cost, sell, margin, and three memory store keys.