You can split cells into columns in Excel using the "Text to Columns" tool, which is a great way to organize lots of data.
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Everything You Need to Know About Array Constants in Excel
Array constants can only contain text in double quotes, plain numbers (no currency symbols or percent signs), or Boolean ...
You can add a column in Excel by right-clicking or using the “Insert” option. These features are helpful for adding new data to a spreadsheet.
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