This does sound more like a unrelated-to-TeX issue. I think this might be better suited for askUbuntu, but the question will need to be clearer.
– Johannes_BJun 04 '16 at 07:37
Following the @HenriMenke, comment I found a relatively acceptable solution using gnumeric at AskUbuntu: http://askubuntu.com/a/502855/325029. So for anybody passing by this question...
– Rostislav KandilarovFeb 07 '17 at 23:50
calc2latex. – Henri Menke Jun 04 '16 at 07:55