function Divide(a:Number):Number {
    return ((a-(a%2))/2);
}
function Multiply(a:Number):Number {
    return (a *= 2);
}
function isEven(a:Number):Boolean {
    if (a%2 == 0) {
        return (true);
    } else {
        return (false);
    }
}
function Ethiopian(left:Number, right:Number) {
    var r:Number = 0;
    trace(left+"     "+right);
    while (left != 1) {
        var State:String = "Keep";
        if (isEven(Divide(left))) {
            State = "Strike";
        }
        trace(Divide(left)+"     "+Multiply(right)+"  "+State);
        left = Divide(left);
        right = Multiply(right);
        if (State == "Keep") {
            r += right;
        }
    }
    trace("="+"      "+r);
}
}