1*2-3*4-56+789=723
1-2*34-5+6+789=723
1+2*3+4+56/7*89=723
12+3-4+56/7*89=723
1-2+3*4+56/7*89=723
12-3+45+678-9=723
1-2-34+56+78*9=723
1/2*3/4*56+78*9=723
1+2+3+4+5+6+78*9=723
1*2*3+4+5+6+78*9=723
1+23-4-5+6+78*9=723
1-2*3+4*5+6+78*9=723
12*3-4-5-6+78*9=723
1+2*3+4*5-6+78*9=723
1-2*3-4+5*6+78*9=723
1+2-3*4+5*6+78*9=723
1+2*3*4*5/6+78*9=723
1-2*3+4*56+7*8*9=723