40% of 7 =
                   ( 2.8 )

60% of 9 =
                   (       )

7% of 4 =
                   (       )

40% of 90 =
                   (       )

20% of 7 =
                   (       )

40% of 20 =
                   (       )

70% of 9 =
                   (       )

50% of 90 =
                   (       )

70% of 90 =
                   (       )

          +[         ]

4% of 5 =
                   ( 0.2 )

5% of 3 =
                   (       )

40% of 9 =
                   (       )

50% of 60 =
                   (       )

40% of 30 =
                   (       )

7% of 6 =
                   (       )

80% of 6 =
                   (       )

40% of 30 =
                   (       )

80% of 50 =
                   (       )

          +[         ]

2% of 80 =
                   ( 1.6 )

40% of 2 =
                   (       )

6% of 20 =
                   (       )

4% of 5 =
                   (       )

80% of 9 =
                   (       )

4% of 6 =
                   (       )

7% of 9 =
                   (       )

40% of 70 =
                   (       )

8% of 6 =
                   (       )

          +[         ]

       ++[[            ]]