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How to keep one type of number in a column and delete the other type?

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As a teacher, having successfully cataloged my class library in a spreadsheet, I now face the challenge of uploading it to a website. However, the website recognizes books solely based on the 978 number, and I need a solution to remove any other numbers in the spreadsheet column while retaining only the 978 numbers. Is there a method or script to achieve this task effectively?

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You can use VBA code to solve this problem. Copy and paste  then press the shortcut ALT+F8 to run the Macro

Sub UniqueRemoveNumberAfter978()
Dim ws As Worksheet
Dim lastRow As Long
Dim i As Long
Dim cellValue As String
Dim result As String

' Set the worksheet (modify the sheet name if needed)
Set ws = ThisWorkbook.Sheets("Sheet1") ' Change "Sheet1" to your sheet name

' Find the last row with data in column A
lastRow = ws.Cells(ws.Rows.Count, "A").End(xlUp).Row

' Loop through each cell in column A
For i = 1 To lastRow
cellValue = Trim(ws.Cells(i, 1).Value) ' Trim to remove extra spaces

' Check if "978" is present in the cell
If InStr(cellValue, "978") > 0 Then
' If "978" is in the first position, keep only the part of the string that starts with "978"
If InStr(cellValue, "978") = 1 Then
result = "978" & Mid(cellValue, Len("978") + 1)
End If
End If

' Remove the number after "978" (separated by a space) in column B
If InStr(result, "978") >