4% of 7 =
                   ( 0.28 )

7% of 6 =
                   (       )

80% of 30 =
                   (       )

6% of 40 =
                   (       )

9% of 20 =
                   (       )

6% of 9 =
                   (       )

30% of 90 =
                   (       )

30% of 50 =
                   (       )

8% of 7 =
                   (       )

          +[         ]

5% of 50 =
                   ( 2.5 )

70% of 80 =
                   (       )

30% of 90 =
                   (       )

20% of 50 =
                   (       )

20% of 80 =
                   (       )

90% of 20 =
                   (       )

60% of 90 =
                   (       )

60% of 7 =
                   (       )

70% of 8 =
                   (       )

          +[         ]

30% of 60 =
                   ( 18 )

9% of 90 =
                   (       )

3% of 8 =
                   (       )

20% of 90 =
                   (       )

3% of 20 =
                   (       )

60% of 9 =
                   (       )

3% of 3 =
                   (       )

20% of 30 =
                   (       )

60% of 20 =
                   (       )

          +[         ]

       ++[[            ]]