看到很多关于分页小计

看到很多关于分页小计（每页页底增加一行本页相关数据的汇总数据，在财务方面使用很广）的需求，可以用下面的代码完成：
比如A列是“产品”，B列是“金额”。现对“金额”进行分页小计

Dim i, t, l, x, rr, dr, tt As Integer
Dim rrr As String
Public Sub Fyhz()
t = 2
Do
i = InputBox("请输入每页拟打印的行数：                   （不能超过一页的范围！！！）")

If i <= 0 Or i = "" Then
MsgBox ("每页行数必须大于1！")
Else
Exit Do
End If
Loop
i = Int(i)
x = i + 1
l = Range("A65536").End(xlUp).Row
Do While l >= x

Rows(x + 1).Insert Shift:=xlDown
Cells(x + 1, 1) = "本页小计"
Cells(x + 1, 2).Formula = "=SUM(R[-" + CStr(i) + "]C:R[-1]C)"
ActiveWindow.SelectedSheets.HPageBreaks.Add Before:=Rows(x + 2)
x = (i + 1) * t
t = t + 1
l = l + 1
Loop

If l Mod (i + 1) <> 1 Then
rr = l Mod (i + 1)
rr = rr - 1
rrr = CStr(rr)
Cells(l + 1, 1) = "本页小计"
Cells(l + 1, 2).FormulaR1C1 = "=SUM(R[-" + rrr + "]C:R[-1]C)"
End If
Cells(l + 2, 1) = "合计"
Cells(l + 2, 2).FormulaR1C1 = "=SUM(R[-" + CStr(l + 1) + "]C:R[-1]C)/2"
Range(Cells(1, 1), Cells(l + 1, 2)).Locked = True
ActiveSheet.Protect
Cells(1, 1).Select