\frac{1}{\not12^3}*\not100^{25}\%=\frac{25}{3}\%=8\frac{1}{3}\approx8\%
\frac{1}{3}*100\%=\frac{100}{3}\%=33\frac{1}{3}\%\approx33\%
\frac{5}{\not6^3}*\not100^{50}\%=\frac{5*50}{3}\%=\frac{250}{3}\%=83\frac{1}{3}\%\approx83\%
\frac{142}{\not350^7}*\not100^2\%=\frac{142*2}{7}\%=\frac{284}{7}\%=40\frac{4}{7}\%\approx41\%
\frac{1248}{5700}*100\%=\frac{1248}{57}\%=21\frac{51}{57}\%\approx22\%