<<<<
3050-20 7667 4627+9 40-824+8
35-8= 50-6= 11-9= 31-7= 15+30=
48-7= 40+28= 60+24= 74-50= 27+4=
25-10= 18+5-9= 6+20= 13-6= 22+40=
3+9-6= 43-8= 53+7= 70-30= 15-7+4=