13 x 141= - 1833, (6p - 2) / 7 = (5p + 7) / 8 - p = 5, 96.8 / t = 12.1 / 7 - 56, 123 +987 = - 1110, 6 x 7 = - 42, 900 x 2 +1-2 - 1799, 1234567890 x 123456789 = - 1.5241579e+16, 1 x 2 x3 x 4 x 5 x 6 x 7 x 8 x 9 = - 362880, 1/2/3/4/5/6/7/8/9 - 0.00000275573, 99999999999999999999 x 99999999999999999999 = - 1e + 40,

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