Well, I just did (47 * 75) : 25 = 47 * 3 = something that will end with a 1. So only 141 would be a valid option. No need to complete the calculation. Besides the point that 47 * 3, will also certainly never be above 1000 if you make an estimate, which also only leaves 141 as the only option.

> The classic is the stupid "the autobahn doesn't have speed limits so why do we have limits on
> Road X" argument. Nicely forgetting that the unlimited sections of the autobahn have been designed
> for high speed travel, and only roads with very specific and strict design criteria are allowed to
> have no limit.

Besides that you are at least half responsible for any accident when your speed is above 130kph on the autobahn unless you can prove your speed was not a factor in the accident. And of course on the german autobahn you can expect to be passed by cars that are travelling much faster than you do.