The calculator includes features below: Four arithmetic operations, percentages, tax, and tip calculations. Calculations with parentheses. Memory, M+, M-, MR, MC. Scroll up/down lines. Easy editing by using a cursor operation. Cut, copy, and paste. Expressions history and answer history. Four arithmetic operations: 1 + 2 - 3 × 4 ÷ 5 = 0. 6. Tax calculation: 600 Tax+ 636