5% of 20 =
                   ( 1 )

9% of 20 =
                   (       )

80% of 5 =
                   (       )

6% of 90 =
                   (       )

5% of 2 =
                   (       )

8% of 90 =
                   (       )

70% of 30 =
                   (       )

60% of 50 =
                   (       )

3% of 2 =
                   (       )

          +[         ]

4% of 60 =
                   ( 2.4 )

60% of 30 =
                   (       )

6% of 2 =
                   (       )

2% of 30 =
                   (       )

2% of 20 =
                   (       )

3% of 80 =
                   (       )

6% of 5 =
                   (       )

70% of 8 =
                   (       )

3% of 2 =
                   (       )

          +[         ]

90% of 30 =
                   ( 27 )

5% of 30 =
                   (       )

60% of 9 =
                   (       )

40% of 5 =
                   (       )

60% of 4 =
                   (       )

90% of 6 =
                   (       )

30% of 4 =
                   (       )

80% of 3 =
                   (       )

4% of 7 =
                   (       )

          +[         ]

       ++[[            ]]