A file named test.csv has one line in it:

16E035

This is an accounting code used at our university. If I open that file,
Excel shows 1.6*10^36 in cell A1. If I specify that the value is a string:

"16E035"

Excel still converts it to 1.6*10^36. How should this value be entered in
the file so Excel leaves it as a character string?

Thanks for your help.