You gotta love an opinion that begins:
In this appeal we are asked to determine whether “.82″ is the equivalent of “82%.” Having successfully completed grammar school, we are able to answer the question in the affirmative.
An unsuccessful bidder for an offshore oil and gas lease brought suit against the Secretary of the Interior for awarding the contract to a competitor. The plaintiff offered a royalty of “73.45689%” in its bid. A competitor offered a royalty bid of “.82165.” The Secretary construed the competitor’s bid as one for 82.165 percent, and awarded the contract to it based on it being the higher bid.
The plaintiff asserted the Secretary acted arbitrarily and capriciously in construing .82165 to be 82.165 percent. The trial court agreed and entered judgment for the plaintiff.
The U.S. Court of Appearls for the Fifth Circuit reversed, relying on as its primary source of authority an eighth-grade math book called “Growth in Arithmetic,” which the Court said asked and answered the pertinent question: “Do you know how to change a per cent to a decimal?”
— Oil & Gas Futures, Inc. of Tex. v. Andrus, 610 F.2d 287, 287–88 (5th Cir. 1980). Thanks to Frank Zotter.