hola
-498 X N = R
-498 X 1 = -498
-498 X 2 = -996
-498 X 3 = -1494
-498 X 4 = -1992
-498 X 5 = -2490
-498 X 6 = -2988
-498 X 7 = -3486
-498 X 8 = -3984
-498 X 9 = -4482
-498 X 10 = -4980
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