A man who ‘miscalculated’ a tip went out of his way to make it right.

It's easy to make a mistake while calculating gratuity and a man who ‘miscalculated’ a tip for his waitress went out of the way to make it right, reports Mashable.
He wrote the Boston woman a letter of apology and sent the cash he’d shorted her.
The correspondence was posted to Reddit by a friend of the server involved, and reads, in part, “I was in for dinner last Friday night with my wife, sister, and brother-in-law…For some reason – perhaps rushing out to get to the show, I miscalculated your tip and ended up short changing you.”
The man