Option Explicit
'Graham Mayor - https://www.gmayor.com - Last updated - 19 Mar 2022
'The Symbol function is based on code from https://wordmvp.com/FAQs/MacrosVBA/FindReplaceSymbols.htm.


Private OriginalRange As Range, oPara As Range, oChar As Range
Private vFindText As Variant
Private vReplaceText As Variant
Private oRng As Range
Private i As Long


Sub Macro1()
    vFindText = Array("( [\>\<\+\=])([0-9])", "([! ])([\>\<\+\=])([0-9])")
    vReplaceText = Array("\1 \2", "\1 \2 \3")
    For i = 0 To UBound(vFindText)
        Set oRng = ActiveDocument.Range
        With oRng.Find
            .ClearFormatting
            .Replacement.ClearFormatting
            .Execute findText:=vFindText(i), _
                     MatchWildcards:=True, _
                     Forward:=True, _
                     Wrap:=wdFindStop, _
                     Replacewith:=vReplaceText(i), _
                     Replace:=wdReplaceAll
        End With
    Next i

    Set oRng = ActiveDocument.Range
    With oRng.Find
        .ClearFormatting
        .Replacement.ClearFormatting
        Do While .Execute(findText:=ChrW(247), _
                          MatchWildcards:=False, _
                          Forward:=True, _
                          Wrap:=wdFindStop)
            If oRng.Start = oRng.Paragraphs(1).Range.Start Then
                oRng.Text = ChrW(247) & Chr(32)
            Else
                oRng.Text = Chr(32) & ChrW(247) & Chr(32)
            End If
            oRng.Collapse 0
        Loop
    End With

    Call ReplaceSymbol(FindChar:=ChrW(-3916), _
                       FindFont:="Symbol", _
                       ReplaceChar:=-3916, _
                       ReplaceFont:="Symbol")
lbl_Exit:
    Set oRng = Nothing
    Exit Sub
End Sub

Sub ReplaceSymbol(FindChar As String, FindFont As String, _
                  ReplaceChar As String, ReplaceFont As String)
    Set OriginalRange = Selection.Range
    ActiveDocument.Range(0, 0).Select

    With Selection.Find
        .ClearFormatting
        .Text = FindChar
        .Replacement.ClearFormatting
        .Replacement.Text = ""
        .Forward = True
        .Wrap = wdFindStop
        .Format = False
        .MatchCase = False
        .MatchWholeWord = False
        .MatchWildcards = False
        .MatchSoundsLike = False
        .MatchAllWordForms = False

        Do While .Execute
            'keep searching until nothing found
            If Dialogs(wdDialogInsertSymbol).Font = FindFont Then
                'Insert the replacement symbol where the found symbol was
                Set oChar = Selection.Range
                Set oPara = oChar.Paragraphs(1).Range
                If Not oChar.Start = oPara.Start Then
                    Selection.Text = Chr(32)
                    Selection.Collapse 0
                End If
                Selection.InsertSymbol Font:=ReplaceFont, _
                                       CharacterNumber:=ReplaceChar, Unicode:=True
                Selection.Collapse (0)
                Selection.Text = Chr(32)
                Selection.Collapse 0
            Else
                Selection.Collapse 0
            End If
        Loop
    End With
    OriginalRange.Select
lbl_Exit:
    Set OriginalRange = Nothing
    Exit Sub
End Sub