Hi I’m not EXACTLY sure if this is right but I think it’s 11 batches?
Since 2/3 cup of chocolate chips = 1 batch
So 1/3 would = .5 (half a batch)
7 1/3 into a an improper fraction (just so it’s easier) = 22/3
In order to make 1/3 be 22/3 you would have to multiply 22 by 1/3
So you multiply 1/3 x 22 = 22/3
And you also multiply .5 x 22 = 11
So 22/3 (aka 7 1/3) serves 11 batches.
Not sure if this is right but the method I’m using is called the unitary method.