330 000 * 1000000= 330000000000
382*905+618*905=313426840
749*709+251*709=376686028
1027*378-72:36*905-628:4=2439157.375
(650*15+350*15)*0+800:32-25=4734.375
P(5x)=5x+6
p(x-4)=x-4+6=x+2
5(p(5x)-5p(x-4))=5(5x+6-5(5x+6))=5(5x+6-25x-30)=5(-20x-24)=-100x-120
5 * 6целых 2/3 + 5целых 3/9 * 6 =5*(6*3+2)/3 +(5*9+3)/9 *6=