90% of 70 =
                   ( 63 )

70% of 20 =
                   (       )

30% of 60 =
                   (       )

70% of 30 =
                   (       )

70% of 50 =
                   (       )

80% of 30 =
                   (       )

50% of 70 =
                   (       )

40% of 40 =
                   (       )

90% of 60 =
                   (       )

          +[         ]

30% of 9 =
                   ( 2.7 )

30% of 6 =
                   (       )

60% of 5 =
                   (       )

3% of 80 =
                   (       )

5% of 60 =
                   (       )

3% of 80 =
                   (       )

80% of 9 =
                   (       )

40% of 2 =
                   (       )

60% of 3 =
                   (       )

          +[         ]

3% of 7 =
                   ( 0.21 )

1% of 2 =
                   (       )

3% of 6 =
                   (       )

8% of 9 =
                   (       )

2% of 7 =
                   (       )

4% of 2 =
                   (       )

6% of 6 =
                   (       )

2% of 9 =
                   (       )

9% of 7 =
                   (       )

          +[         ]

       ++[[            ]]