When you type a seven-or-ten-digit phone number into an Excel cell that uses the phone number format, Excel will automatically change the way the number looks so that it appears as a phone number ...

Learn Excel 365 number formatting to create clear, professional spreadsheets. Learn essential tips and advanced techniques for data clarity ...

Excel provides one general formula that finds the difference between numbers, dates and times. It also provides some advanced options to apply custom formats to your results.