At Annie's Home-Cooked Chicken Wings Restaurant, chicken wings are
served by the bucket. The Biggest Bucket O' Wings is really big! Let's
figure out how many wings are in it.
If they're removed two at a time,
one wing will be left. If they're removed three at a time, two wings
will remain. If they're removed four, five, or six at a time, then
three, four, and five wings, respectively, will remain. If they're taken
out seven at a time, no wings will be left over.

What's the smallest possible number of wings that could be in the
bucket? How do you know?