Ключевые слова: 20, background, birthday, blurred, buy, buyer, communication, concept, copy, cost, couple, credit, digit, discount, double, emissions, finance, financial, fingers, hand, holding, holds, interest, marketing, mathematical, minimum, number, numeral, old, pay, percent, percentage, person, plan, price, promotion, rate, reduction, shopping, showing, sign, smiling, space, strategy, symbol, technology, twenty, white, years,