(1-9)*(5-8)(5-8)*(1-9)(8-5)*(9-1)8*((9-1)-5)8*(9-(1+5))8*((9-5)-1)8*(9-(5+1))((9-1)-5)*8(9-(1+5))*89/(1-(5/8))(9-1)*(8-5)((9-5)-1)*8(9-(5+1))*8
(9-1)*(8-5)=24
(9一1)十(8十5)=24
(8-5)(9-1)