80% of 5 =
                   ( 4 )

90% of 80 =
                   (       )

90% of 5 =
                   (       )

50% of 40 =
                   (       )

90% of 80 =
                   (       )

80% of 30 =
                   (       )

90% of 20 =
                   (       )

20% of 3 =
                   (       )

7% of 6 =
                   (       )

          +[         ]

9% of 2 =
                   ( 0.18 )

80% of 5 =
                   (       )

4% of 5 =
                   (       )

80% of 60 =
                   (       )

70% of 5 =
                   (       )

40% of 80 =
                   (       )

5% of 9 =
                   (       )

40% of 20 =
                   (       )

2% of 70 =
                   (       )

          +[         ]

90% of 80 =
                   ( 72 )

5% of 5 =
                   (       )

90% of 3 =
                   (       )

70% of 6 =
                   (       )

90% of 3 =
                   (       )

40% of 40 =
                   (       )

7% of 70 =
                   (       )

50% of 3 =
                   (       )

40% of 40 =
                   (       )

          +[         ]

       ++[[            ]]