BinOps(
    [
        (
            @0-1 SpaceAfter(
                Num(
                    "3",
                ),
                [
                    LineComment(
                        " 2 × 2",
                    ),
                ],
            ),
            @12-13 Plus,
        ),
    ],
    @14-15 Num(
        "4",
    ),
)