I’m fairly sure that’s more reciting a solution learned from memory than doing math. What does it answer to

“How do I measure 12 liters when I have a 15 liter bottle and a 9 liter bottle?”

or

“How do I measure a liter when I have a 750 ml milk carton and a 12½ dl tea pot?”

I think we expect an AGI to be able to answer them, even though quite a few intelligent humans wouldn’t be able to do that.