60% of 40 =
                   ( 24 )

80% of 3 =
                   (       )

50% of 9 =
                   (       )

5% of 8 =
                   (       )

9% of 20 =
                   (       )

2% of 30 =
                   (       )

70% of 50 =
                   (       )

30% of 60 =
                   (       )

4% of 60 =
                   (       )

          +[         ]

8% of 40 =
                   ( 3.2 )

80% of 60 =
                   (       )

30% of 3 =
                   (       )

60% of 70 =
                   (       )

3% of 70 =
                   (       )

4% of 4 =
                   (       )

50% of 70 =
                   (       )

80% of 40 =
                   (       )

5% of 5 =
                   (       )

          +[         ]

6% of 50 =
                   ( 3 )

50% of 2 =
                   (       )

9% of 70 =
                   (       )

70% of 3 =
                   (       )

70% of 80 =
                   (       )

20% of 40 =
                   (       )

60% of 4 =
                   (       )

90% of 8 =
                   (       )

90% of 90 =
                   (       )

          +[         ]

       ++[[            ]]