(40+7)*8= (70+5)*4=
(50+4)*6= (30+8)*9=
(30+9)*7= (80+5)*6=
(50+4)*9= (90+8)*5=

(40+7)*8=376(70+5)*4=300(50+4)*6 =324(30+8)*9=342(30+9)*7=273(80+5)*6=510(50+4)*9=486(90+8)*5=490