I have experience with such tasks and managed to gain proficiency after writing many documents as a student, and throughout my professional career. I guarantee LaTeX code that delivers expected results.
One (1) gig amounts to one or two such insertions/modifications. The number depends on the difficulty, which is usually gauged by the size and contents of the table (multi-page tables are possible).
If you wish to transfer a complete document into LaTeX format, I can provide a custom offer.
Before hiring me, please get in touch in order to assess if I'm a good fit for the task, and to adjust price and delivery time, if necessary.