{"text_format":"1","workbook":"xlsx","n_sheets":3,"sheets":["Formula","VBA","Option"],"not_rendered":{"charts":0,"images":0,"macros":1,"external_links":0,"defined_names":0,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"Formula","index":0,"n_rows":10,"n_cols":3,"rows_kept":10,"cut":false,"hidden":false,"merged":[[1,1,1,3]]}
[]
[null,"Convert Column Number to Letter"]
[]
[null,"Number","Letter"]
[null,1,{"$f":"SUBSTITUTE(ADDRESS(1,B5,4),\"1\",\"\")","v":"A"}]
[null,55,{"$f":"SUBSTITUTE(ADDRESS(1,B6,4),\"1\",\"\")","v":"BC"}]
[null,200,"GR"]
[null,678,"ZB"]
[null,1234,"AUL"]
[null,9876,"NOV"]

{"sheet":"VBA","index":1,"n_rows":10,"n_cols":3,"rows_kept":10,"cut":false,"hidden":false,"merged":[[1,1,1,3]]}
[]
[null,"Convert Column Number to Letter"]
[]
[null,"Number","Letter"]
[null,1,{"$f":"NumToLetter(B5)","v":"A"}]
[null,55,{"$f":"NumToLetter(B6)","v":"BC"}]
[null,200,{"$f":"NumToLetter(B7)","v":"GR"}]
[null,678,{"$f":"NumToLetter(B8)","v":"ZB"}]
[null,1234,{"$f":"NumToLetter(B9)","v":"AUL"}]
[null,9876,{"$f":"NumToLetter(B10)","v":"NOV"}]

{"sheet":"Option","index":2,"n_rows":2,"n_cols":2,"rows_kept":2,"cut":false,"hidden":false,"merged":[[1,1,3,3]]}
[]
[null,"Using Excel's Built-in Option to Convert Column Number to Letter"]