1. A method for performing calculations of an electronic device, comprising: receiving character input and displaying input characters in a character input window; checking whether an arithmetic expression is present in the displayed input characters; calculating the arithmetic expression when the arithmetic expression is present in the displayed input characters; and displaying a result of the calculation.
1. A method for performing calculations of an electronic device, comprising: receiving character input and displaying input characters in a character input window; checking whether an arithmetic expression is present in the displayed input characters; calculating the arithmetic expression when the arithmetic expression is present in the displayed input characters; and displaying a result of the calculation. 2. The method of claim 1 , further comprising: determining whether a preset calculation enabling condition is satisfied; and determining to check whether the arithmetic expression is present in the displayed input characters, if the calculation enabling condition is satisfied.