in python Write a program with a car's gas mileage $($miles$/$gallon$)$ and the cost of gas $($dollars$/$gallon$)$ as floating$-$point input, and output the gas cost for $20$ miles, $75$ miles, and $500$ miles.

Output each floating$-$point value with two digits after the decimal point, which can be achieved as follows:

print$($f$\text{'}\{$your$\_$value$1$:$\mathrm{.}2$f$\}\{$your$\_$value$2$:$\mathrm{.}2$f$\}\{$your$\_$value$3$:$\mathrm{.}2$f$\}\text{'})$