This is how you make the equation Type the first number of the equation. In 2-5, type 2. Type the operation. The operations to type are: Addition, Subtraction, Multiplication, Division. Type that only, otherwise, it will not work. In 2-5, type Subtraction. Type the second number. In 2-5, type 5.
I made the eye. Don't ask why an eye is solving math problems. This does not work with fractions. (convert the fraction to a decimal and then convert it back if you want)