Sub multi()
With Sheets(1)
i = 2
Do While .Cells(i, "A").Value <> ""
t1 = .Cells(i, "A").Value
n1 = InStr(t1, "(")
n2 = InStr(t1, ")")
t2 = Mid(t1, n1 + 1, (n2 - n1) - 2)
temp = Split(t2, "X")
m = temp(0) * temp(1)
.Cells(i, "B").Value = m
i = i + 1
Loop
End With
End Sub