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1.

2013 - 1974 =

2.

660000 - 524315 =

3.

9985 - 1235 =

4.

124568 - 29974 =

5.

1584 - 883 =

6.

1701 - 1167 =

7.

897654 - 567384 =

8.

26000 - 25487 =