0
6 - 6 + 6 - 6 + 6 - (6 / 6) = 5
(6/6)+(6/6)+(6/6)+6=9
(6-6)*6/6 = 6-6
((6+6)/6)^6
= (12/6)^6
= 2^6
=64
6 + 6 - 6 * 6 - 6 = 6 + 6 - 36 - 6 = -30