30% of 80 =
                   ( 24 )

80% of 60 =
                   (       )

90% of 8 =
                   (       )

6% of 2 =
                   (       )

5% of 90 =
                   (       )

5% of 4 =
                   (       )

50% of 6 =
                   (       )

70% of 6 =
                   (       )

6% of 30 =
                   (       )

          +[         ]

7% of 30 =
                   ( 2.1 )

30% of 9 =
                   (       )

6% of 8 =
                   (       )

20% of 8 =
                   (       )

6% of 30 =
                   (       )

50% of 60 =
                   (       )

2% of 40 =
                   (       )

90% of 70 =
                   (       )

50% of 8 =
                   (       )

          +[         ]

40% of 7 =
                   ( 2.8 )

90% of 5 =
                   (       )

80% of 9 =
                   (       )

4% of 2 =
                   (       )

70% of 4 =
                   (       )

60% of 4 =
                   (       )

7% of 6 =
                   (       )

60% of 6 =
                   (       )

40% of 40 =
                   (       )

          +[         ]

       ++[[            ]]