Ключевые слова: account, background, bank, banking, budget, business, calculate, calculating, calculation, calculator, commercial, concept, credit, discount, economic, economy, finance, financial, interest, invest, investment, market, marketing, money, object, pay, payment, percent, percent sign, percentage, price, profit, promotion, purchase, rate, reduction, report, sale, saving, shopping, sign, symbol, table, tax, tax percentage, trade, value, wooden, work, zero,