10*(3+6)=90
10*3+10*6=30+60=90
10*(12+8)=200
10*12+10*8=120+80=200
(3+5)*10=80
3*10+5*10=30+50=80
(24+39)*10=63*10=630
(24+39)*10=240+390=630
(8-5)*10=30
(8-5)*10=80-50=30
(34-26)*10=80
(34-26)*10=340-260=80
(9-7)*100=200
(9-7)*100=900-700=200
(92-88)*100=400
(92-88)*100=9200-8800=400