﹙﹣8﹚ˆ2003×﹙﹣0.125﹚ˆ2000
=﹙-8﹚ˆ2003×﹙﹣⅛﹚ˆ2000
=﹙-8﹚ˆ2000×﹙-2³﹚³×﹙﹣⅛﹚ˆ2000
=[﹙-8﹚×﹙﹣⅛﹚]ˆ2000×﹙-8﹚³
=﹙-8﹚³
=-5121