fix(parser): fix for implicit multiplication

fixed implicit multiplication parsing going to `parse_primary` instead of `parse_additive`

src/math/parser.rs

@@ -69,7 +69,6 @@ impl Parser {
                     left = Expression::Operation(Operator::Modulo, Box::new(left), Box::new(right));
                 }
                 Token::OpenParen => {
-                    self.position += 1;
                     let right = self.parse_group();
                     left =
                         Expression::Operation(Operator::Multiply, Box::new(left), Box::new(right));