async func line_count(pages: i32) -> i32:
    return pages * 40

async func entry(chapter_pages: i32) -> i32:
    var total_lines = 0
    with tasks.group() as chapters:
        var chapter = line_count(chapter_pages)
        var appendix = line_count(1)
        total_lines = await chapter + await appendix
    return total_lines