The answer is 45

And the question is: 

How many oranges from our tree does it take to squeeze a half gallon of OJ?  

The empty pitcher is once again filled to the brim with juice from downed oranges Tom collected yesterday.  Plus this morning he and Carlo took down the huge olive tree branch that was blocking the sun from much of the orange tree; in the process they knocked down what looks to be another 45 oranges, just waiting their turn in the juicer.