4+4-4-4=0
(4+4)/(4+4)=1
(4/4)+(4/4)=2
(4+4+4)/4=3
(4-4)*4+4=4
(4*4+4)/4=5
(4+4)/4+4=6
4+4-(4/4)=7
4*4-4-4=8
4+4+(4/4)=9