Applicare la formula: $a+b$$=a+b$, dove $a=600$, $b=30$ e $a+b=600+30+7+0.8+0.09+2\times 10^{-3}$

Applicare la formula: $a+b$$=a+b$, dove $a=630$, $b=7$ e $a+b=630+7+0.8+0.09+2\times 10^{-3}$

Applicare la formula: $a+b$$=a+b$, dove $a=637$, $b=\frac{4}{5}$ e $a+b=637+0.8+0.09+2\times 10^{-3}$

Applicare la formula: $a+b$$=a+b$, dove $a=\frac{3189}{5}$, $b=\frac{9}{100}$ e $a+b=637.8+0.09+2\times 10^{-3}$

Applicare la formula: $a+b$$=a+b$, dove $a=637.89$, $b=\frac{1}{500}$ e $a+b=637.89+2\times 10^{-3}$