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2014-10-20T17:12:52+03:00
2¹⁹⁹⁷*3¹⁹⁹⁸  -  2¹⁹⁹⁸ * 3 ¹⁹⁹⁷=
=2¹⁹⁹⁷* 3¹⁹⁹⁷ *(3-2)=
=2¹⁹⁹⁷* 3¹⁹⁹⁷=
=6
¹⁹⁹⁷