What values are expected from the following Python statements:

$a=\frac{3\mathrm{.}0+2\mathrm{.}0****2}{6\mathrm{.}0-2\mathrm{.}0}$

$b=3\mathrm{.}0+2\mathrm{.}0****\frac{2}{6\mathrm{.}0}-2\mathrm{.}0$

$c=\frac{3\mathrm{.}0}{5\mathrm{.}0}+2\mathrm{.}0****3$

$d=\frac{3}{\frac{?}{?}}5+2****3$

$e=2****3****2$

Provide an explanation for your answers and the corresponding mathematical formula.