I created a spreadsheet and the last thing I did was to create the formula
=sumI23*J24) to get a percent of a cash total. Now when I open the
spreadsheet I can't do anything in it.

I have used the Help screens and think I could get myself out of this jam,
but all of the choices I need are greyed-out.

Can anyone help me? Can I get into Excel, create another blank spreadsheet
and try to copy the contents of the original over or will it copy the
problem, too?