70,491+9,08+3,012+6,3
70,491+9,08+3,012+6,3=89,333 1) 70,491+9,08=80,021 2) 80,021+3,012=83,033 3) 83,033+6,3=89,333
70,491+9,08+3,012+6,3=(70,491+3,012)+(9,08+6,3)=73.503+15,38=88,883