8,3*7+4,5*7+1,7*7+5,5*7 = (8,3+1,7)*7 + (4,5+5,5)*7 = 10*7+10*7 = 10*(7+7) = 140
0,85*4+0,73*5+0,15*4+0,27*5 = (0,85+0,15)*4 + (0,73+0,27)*5 = 4+5=9
5,25*2+6,31*3+2*0,75+3*0,69 = (5,25+0,75)*2 +(6,31+0,69)*3 = 6*2+7*3 = 12+21=33
8,3*7+4,5*7+1,7*7+5,5*7 = (8,3+1,7)*7 + (4,5+5,5)*7 = 10*7+10*7 = 10*(7+7) = 140
0,85*4+0,73*5+0,15*4+0,27*5 = (0,85+0,15)*4 + (0,73+0,27)*5 = 4+5=9
5,25*2+6,31*3+2*0,75+3*0,69 = (5,25+0,75)*2 +(6,31+0,69)*3 = 6*2+7*3 = 12+21=33