80% of 60 =
                   ( 48 )

60% of 10 =
                   (       )

70% of 50 =
                   (       )

20% of 10 =
                   (       )

70% of 30 =
                   (       )

80% of 20 =
                   (       )

90% of 60 =
                   (       )

40% of 30 =
                   (       )

80% of 50 =
                   (       )

          +[         ]

6% of 80 =
                   ( 4.8 )

2% of 50 =
                   (       )

10% of 4 =
                   (       )

7% of 60 =
                   (       )

9% of 50 =
                   (       )

70% of 7 =
                   (       )

3% of 80 =
                   (       )

80% of 1 =
                   (       )

50% of 2 =
                   (       )

          +[         ]

70% of 5 =
                   ( 3.5 )

9% of 40 =
                   (       )

60% of 8 =
                   (       )

2% of 60 =
                   (       )

8% of 90 =
                   (       )

60% of 7 =
                   (       )

40% of 4 =
                   (       )

20% of 1 =
                   (       )

40% of 5 =
                   (       )

          +[         ]

       ++[[            ]]