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The most simple example is adding or subtracting distances. You might say you don't need that, but I'd wager most people need to at some point.


Adding miles to miles or feet to feet make sense, but when do you add feet to miles?


Can you really imagine no scenario when this might happen? Like "A to B is one mile, B to C is 200 feet, how long is A to B to C"? You've never come across anything like this in your whole life?




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