\(A=\left(9+\frac{30303}{80808}+7+\frac{303030}{484848}\right)+4,03\)
\(A=\left(9+\frac{3\times10101}{8\times10101}+7+\frac{30\times10101}{48\times10101}\right)+4,03\)
\(A=\left(9+\frac{3}{8}+7+\frac{5}{8}\right)+4,03\)
\(A=\left(9+7+\frac{3}{8}+\frac{5}{8}\right)+4,03\)
\(A=\left(16+1\right)+4,03\)
\(A=17+4,03=21,03\)