40% of 60 =
                   ( 24 )

20% of 10 =
                   (       )

30% of 50 =
                   (       )

70% of 20 =
                   (       )

20% of 40 =
                   (       )

30% of 20 =
                   (       )

40% of 60 =
                   (       )

80% of 30 =
                   (       )

40% of 60 =
                   (       )

          +[         ]

20% of 9 =
                   ( 1.8 )

7% of 50 =
                   (       )

5% of 40 =
                   (       )

20% of 6 =
                   (       )

50% of 5 =
                   (       )

2% of 80 =
                   (       )

80% of 9 =
                   (       )

30% of 1 =
                   (       )

1% of 20 =
                   (       )

          +[         ]

3% of 5 =
                   ( 0.15 )

6% of 1 =
                   (       )

2% of 6 =
                   (       )

8% of 8 =
                   (       )

1% of 6 =
                   (       )

4% of 1 =
                   (       )

1% of 5 =
                   (       )

6% of 8 =
                   (       )

9% of 7 =
                   (       )

          +[         ]

       ++[[            ]]