30% of 40 =
                   ( 12 )

60% of 80 =
                   (       )

20% of 30 =
                   (       )

20% of 80 =
                   (       )

20% of 20 =
                   (       )

30% of 90 =
                   (       )

40% of 50 =
                   (       )

30% of 90 =
                   (       )

30% of 30 =
                   (       )

          +[         ]

20% of 6 =
                   ( 1.2 )

6% of 30 =
                   (       )

90% of 2 =
                   (       )

6% of 50 =
                   (       )

8% of 30 =
                   (       )

6% of 60 =
                   (       )

7% of 60 =
                   (       )

7% of 80 =
                   (       )

5% of 90 =
                   (       )

          +[         ]

2% of 4 =
                   ( 0.08 )

5% of 7 =
                   (       )

2% of 4 =
                   (       )

8% of 6 =
                   (       )

1% of 4 =
                   (       )

8% of 8 =
                   (       )

9% of 4 =
                   (       )

1% of 6 =
                   (       )

4% of 4 =
                   (       )

          +[         ]

       ++[[            ]]