I've been working with inventory spreadsheets in Google Sheets. I have many SKU's in my inventory and when pasting or typing them in, they are interpreted as text and are left justified in general format cells. For example, `CF-55B`, `BB-32`, `JR-3039`.

But when I type the SKU `LS-1000` or `LS-1001`, it gets reinterpreted as **-Ls 1000** or **-Ls 1001**, both of which are right aligned and appear to be interpreted as numbers representing `-1000` and `-1001`.

Re-entering the values in as `'LS-1000` forces it to be entered as text, but can anybody tell me what is going on here?