Python: Assume that bears weigh $156$ pounds each and tigers weigh $208$ pounds each. Given variables num$\_$bears and num$\_$tigers read from input, compute the average weight of all the bears and tigers, and assign average$\_$weight with the result.

Ex: If the input is:

$9$

$17$

then the output is:

Average weight: $190\mathrm{.}00$