Has an AFL game ever ended 112-37?
Exactly once. On May 28, 1898, Essendon beat St Kilda 112-37, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 112-37 in league history.
That makes 112-37 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 113-37 has happened never and 112-38 has happened 3 times.