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Lucky Cow by Mark Pett for April 21, 2019

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    AndrewSihler  about 2 months ago

    Well, to be painfully literal, the abacus is not a calculator. The calculations are all done in your head, the abacus is simply a convenient (once you get the hang of it) means of keeping track of where you are in the calculations.

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  2. Angel cat
    noreenklose  about 2 months ago

    To ALL my friends here:

    https://zeezoey.com/blog/wp-content/uploads/2017/04/easter.jpg

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    khjalmarj  about 2 months ago

    This is why I installed an abacus app on my iPhone.

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