hola
-686 X N = R
-686 X 1 = -686
-686 X 2 = -1372
-686 X 3 = -2058
-686 X 4 = -2744
-686 X 5 = -3430
-686 X 6 = -4116
-686 X 7 = -4802
-686 X 8 = -5488
-686 X 9 = -6174
-686 X 10 = -6860
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