Converts a fractional number representation of a number into a decimal number.
fractionalrep: the fractional representation. Sometimes a security price, for example, might be expressed as 2.03, meaning $2 and 3/16 of a dollar.
denominator: the denominator - for example, 16 in the example above.
DOLLARDE converts the fractional representation to decimal. Despite its name, it returns a number, not a currency. Its inverse is DOLLARFR.
returns 2.1875 as a number. 2 + 3/16 equals 2.1875.