Ключевые слова: account, accounting, add, addition, additions, banking, business, button, calculate, calculating, calculation, calculator, commerce, concept, count, counting, display, divide, economy, electronic, equipment, finance, financial, home finances, income, invest, investment, machine, market, math, mathematics, multiply, nobody, number, object, office, paper, paperwork, plastic, profit, roll, studio, studio shot, tape, tax,