# [C# (.NET Core)], <s>74</s> <s>88</s> <s>82</s> <s>78</s> <s>77</s> 76 + 18 bytes

<i>-1 byte thanks to [Kevin Cruijssen]</i>

<!-- language-all: lang-cs -->

    s=>s.Select((x,i)=>$"{x}".PadLeft((x-s[0])/45-~s.Take(i).Sum(y=>y<92?-1:1)))

Outputs a collection of strings, one for each line. Byte count also includes:

    using System.Linq;

[Try it online!][TIO-j7k5crkw]

Explanation for 77 byte answer:

    s =>                              // Take input, a string
        s.Select((x, i) =>            // Replace every character with:
            $"{x}"                    //     The character as string
            .PadLeft(                 //     Pad with this many spaces:
                s.Take(i)             //         Take characters, in the input string, preceding current one
                .Sum(y =>             //         Sum them by:
                    y < 92 ? -1 : 1   //             If it's a \ add 1, if / subtract 1
                )
                + (x - s[0]) / 45 + 1 //         If first slash is a / add one more space, if current slash is a \ add one more space (I got this through power of MATHS!)
                                      //         How I arrived at this function:
                                      //         + x / 48        If current slash is a \ add one more space
                                      //         - s[0] / 48 + 1 If the first slash is a / add one more space
            )
        )

[C# (.NET Core)]: https://www.microsoft.com/net/core/platform
[TIO-j7k5crkw]: https://tio.run/##ZU9RT8IwEH7vrziJD22ATow@KGzGEDAmmBgh8UF8qOWQxq7DtdMRwm@f3aaQyZdce/m@u/vupO3KJMUis8q8w3RjHcZ8osxnnxAjYrRrIfGPHyZao3QqMZbfocFUSbIl4CG1sBZuq7xmSlgnnJLwlagFPAhlKNtLh6IS48zIgXWp36ED9yOTxZiKN42/XBTBEsLChpHlUyxXoDTvKBZGp61tvmvxR7GY4NJRy2fiA6lifJrFdBNGm8HV@U23d91jbZp37cvZKwsuLts9xop@Y4PaCJRZZ66pfK@URqC0kiCEob8@0cif0Jsqg5QxOAnBZFqzRmPzxBLLegifpSr2bXyWTJR1lPFxko6EXNEcwmhv8Jwqh5VDzlj/aNhx2b@iHWlmO7Ir5gcQH0Hgo36DgARl7vnqJ5U0D34A "C# (.NET Core) – Try It Online"
[Kevin Cruijssen]: https://codegolf.stackexchange.com/users/52210/kevin-cruijssen