Answer:
The formating is a bit confusing but I think the answer to your question would be, "Matt's error is that he just divided the denominator and not the numerator "
11/12 of a gallon, you have to find the common denominator.
2x^2 - 32
2(x^2 - 16)
2(x + 4)(x - 4) <==
New Workshop: 4,134,232,638,937
Old Workshop: 22,912,546,992
New/Old = 180.435
The new workshop can produce approximately 180 times as many toys as the old workshop.