(-14)x(-9)x(12)x(0)x(13)x(-1)
(13.284)x(-1)
(-7)x(-19)x(-17)
(-a)x(b)x(c)
(a)x(b)
(14)x(5)x(-2)
(-5)x(7)x(2)x(-3)
(9)x(-8)x(-13)
ab
-2261
210
-13.284
-abc
936
-410
0
