8% of 7 =
                   ( 0.56 )

30% of 7 =
                   (       )

70% of 3 =
                   (       )

30% of 9 =
                   (       )

40% of 20 =
                   (       )

50% of 90 =
                   (       )

40% of 50 =
                   (       )

30% of 40 =
                   (       )

40% of 70 =
                   (       )

          +[         ]

50% of 5 =
                   ( 2.5 )

60% of 20 =
                   (       )

5% of 7 =
                   (       )

50% of 50 =
                   (       )

50% of 20 =
                   (       )

80% of 2 =
                   (       )

50% of 30 =
                   (       )

50% of 9 =
                   (       )

3% of 5 =
                   (       )

          +[         ]

20% of 6 =
                   ( 1.2 )

90% of 60 =
                   (       )

9% of 4 =
                   (       )

40% of 5 =
                   (       )

70% of 80 =
                   (       )

50% of 90 =
                   (       )

30% of 8 =
                   (       )

50% of 5 =
                   (       )

50% of 5 =
                   (       )

          +[         ]

       ++[[            ]]