Most common calculators in the forum?

[Gerson W. Barbosa]

(03-02-2018 04:44 PM)Maximilian Hohmann Wrote:  Another rebranded Casio school calculator, this time under the name of a once famous German typewriter manufacturer of which only the name remains, called Olympia LCD-8310:

Reminds me of a book I read in the original Portuguese when I was 14. Quoting from The Man Who Counted:

Quote:“Let us multiply now by three:
142,857 x 3 = 428,571
“Once more, notice how curious the answer is. Its numbers are the same ones again, but in a different order. The 1 that was at the left has moved to the right; the other numbers stay where they were.
“When we multiply by four, although the numbers shift position, they remain in the same order:
142,857 x 4 = 571,428