1. Enter it as TEXT: '058 (note the initial apostrophe).
2. Format/Cells/Number Custom Type: 000
3. =TEXT(A1,"000")
4. First format the cell as TEXT, then enter 058
If the numbers are actually TEXT and you don't intend to do any math on
them(like part numbers for instance), just format the cells for TEXT or use
a leading apostrophe when entering them.