I've been using Excel for years and had very few issues. However, I recently went into a spreadsheet to update it and was unable to select and enter data into an individual cell. When I click on a cell and try to enter #s nothing happens (my num lock is on). Then when I try to click into another cell it just highlights that cell, along with any other that I move my cursor over. Once I click on one cell I can't stop the highlighting from happening. I can't even click on anything in the toolbar. I am extremely confused, can anyone help?
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