The real power of the spreadsheet comes from being able to perform calculations on the data you have entered.
All formulas consist of an equal sign followed by the formula for the calculation.
You enter them into a cell just as you would enter numeric or text data. Note that division by zero is not legal and will result in an error. The exponent in exponentiation may be negative, allowing you to calculate fractional powers, and may also be a fraction, such as 0.5, allowing you to calculate roots. You organize complex expressions with parentheses. The portion of a formula enclosed by parentheses will be calculated first, and the result of that sub-calculation is then used.