80% of 90 =
                   ( 72 )

2% of 5 =
                   (       )

9% of 6 =
                   (       )

80% of 4 =
                   (       )

5% of 9 =
                   (       )

4% of 5 =
                   (       )

20% of 8 =
                   (       )

40% of 8 =
                   (       )

90% of 60 =
                   (       )

          +[         ]

9% of 60 =
                   ( 5.4 )

4% of 9 =
                   (       )

70% of 4 =
                   (       )

90% of 9 =
                   (       )

60% of 2 =
                   (       )

8% of 9 =
                   (       )

7% of 50 =
                   (       )

30% of 60 =
                   (       )

7% of 7 =
                   (       )

          +[         ]

6% of 90 =
                   ( 5.4 )

8% of 6 =
                   (       )

4% of 4 =
                   (       )

20% of 80 =
                   (       )

6% of 7 =
                   (       )

40% of 9 =
                   (       )

90% of 30 =
                   (       )

90% of 7 =
                   (       )

4% of 40 =
                   (       )

          +[         ]

       ++[[            ]]