40% of 4 =
                   ( 1.6 )

4% of 60 =
                   (       )

8% of 2 =
                   (       )

2% of 40 =
                   (       )

40% of 3 =
                   (       )

4% of 4 =
                   (       )

20% of 4 =
                   (       )

6% of 70 =
                   (       )

6% of 2 =
                   (       )

          +[         ]

40% of 8 =
                   ( 3.2 )

90% of 30 =
                   (       )

60% of 40 =
                   (       )

9% of 50 =
                   (       )

50% of 20 =
                   (       )

2% of 90 =
                   (       )

9% of 4 =
                   (       )

9% of 9 =
                   (       )

70% of 60 =
                   (       )

          +[         ]

50% of 80 =
                   ( 40 )

9% of 6 =
                   (       )

4% of 70 =
                   (       )

4% of 7 =
                   (       )

4% of 20 =
                   (       )

40% of 5 =
                   (       )

80% of 80 =
                   (       )

4% of 80 =
                   (       )

4% of 9 =
                   (       )

          +[         ]

       ++[[            ]]