\(\frac{3.5.7.11.13.37-10101}{1212120+40404}\)
\(=\frac{3.5.7.11.13.37-3.7.13.37}{40404.30+40404.1}\)
\(=\frac{3.7.13.37.\left(5.11-1\right)}{40404.\left(30+1\right)}\)
\(=\frac{3.7.13.37.54}{40404.31}\)
\(=\frac{3.7.13.37.54}{3.7.13.37.31.4}\)
\(=\frac{54}{31.4}=\frac{27}{62}\)