$\frac{360}{540} = \frac{2 * 180}{3 * 180} = \frac{2}{3}$;
$\frac{42}{720} = \frac{7 * 6}{120 * 6} = \frac{7}{120}$;
$\frac{210}{1260} = \frac{1 * 210}{6 * 210} = \frac{1}{6}$;
$\frac{360}{6000} = \frac{3 * 120}{50 * 120} = \frac{3}{50}$;

$\frac{132}{297} = \frac{4 * 33}{9 * 33} = \frac{4}{9}$;
$\frac{99}{252} = \frac{11 * 9}{28 * 9} = \frac{11}{28}$;
$\frac{120}{165} = \frac{8 * 15}{11 * 15} = \frac{8}{11}$;
$\frac{120}{363} = \frac{40 * 3}{121 * 3} = \frac{40}{121}$.