123*781+123986*12=? 89*12+12564=

1) 123×781+123986×12=1583895.2)89×12+12564=13632

123*781+123986*12 123×781= 96063123986×12=148783296063+1487832= 1 583 89589*12+1256489×12= 10681068+12564=13 632