I don't know of any way to do this in Excel but here's a thought. Export the data to a .csv file and use find and replace to replace <@> with <,@,>. You can then import the result into a new spreadsheet.
OnePlus 5 review
Alice Saey's mesmerising animation for Dutch singer Mark Lotterman
iPad Pro 10.5in (2017) review
Comment booster votre iPhone ?