Select the non$-$US revenue for all movies $($the entire second column of all$\_$wars$\_$matrix$),$ store the result as non$\_$us$\_$all.

Use mean$()$ on non$\_$us$\_$all to calculate the average non$-$US revenue for all movies. Simply print out the result.

This time, select the non$-$US revenue for the first two movies in all$\_$wars$\_$matrix. Store the result as non$\_$us$\_$some.

Use mean$()$ again to print out the average of the values in non$\_$us$\_$some.