George Lucas says, in some blu-ray commentary, that ships in the Star Wars universe calculate hyperspace routes that turn around celestial objects, so if there are a lot of them in the way, they take longer routes. So the milennium falcon computer was able to calculate a very short route.
Skirting black holes sounds troublesome, though, as that would cause time dilation in normal physics and make your trip last longer.. like when they take a quick trip to the object closer to the black hole in Interstellar. From the point of view of the guy left behind on the main ship, that short trip lasts several decades. But I guess special physics for hyperspace could make up for that, perhaps that its space is not affected by gravity in the same way or something.
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