It's a pretty simple question. How much corn is in a can? But there's no clear quick answer. Sure, you can look at the weight on the label, but that doesn't translate into how many ears of corn are in that can. I guess that math would require an average weight based on the years yield. Temperature, conditions, moisture, etc... but you can always grab a corn cob and reassemble it yourself.

Bravo to the incredibly bored person that put the work in to figure it out. Seems like it probably took forever.

TL:DR - About one and a half ears in an average can of corn.