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So I'm playing around with the Spotlight calculator, and came across a weird thing:

If I type

1..1, I receive 0.1
5..6, I receive 3
523..6.1, I receive 31.38

Does anybody know what mathematical function this is?

Edit: This works on macOS Sierra 10.12.2, as for people in the comments, it looks like three dots are required on macOS High Sierra.

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  • I don't get those results when I use Spotlight on my MBP on High Sierra. I get a bunch of different answers but none of them is mathematical.
    – fsb
    Oct 18 '17 at 22:32
  • This doesn't work for me with two dots, only with three
    – grg
    Oct 18 '17 at 22:32
  • Yep, 3 dots is what it takes.
    – fsb
    Oct 18 '17 at 22:35
  • @fsb Huh... Works perfectly fine for me with two. I'm on Mac OS Sierra 10.12.2.
    – user260245
    Oct 19 '17 at 2:37
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What is happening, is the calculator splits the numbers and dots into the following:

5..6=3 turns into 5 * .6 = 3

As we know that . is another way of saying 'multiply' its simply, 5 multiplied by .6

As for 523..6.1=31.38, it turns into 523 * (.6 * .1) = 31.38

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