Covid-🧮

When the abacus experienced a reawakening among thousands of students worldwide during the lockdown, when they went online to learn how to use this zero-battery primitive calculator, which allows them not only to do the four operations of arithmetic, but also to square and cube root large numbers.

Who would have expected that Covid-19 would be the catalyst to infect students, teachers, and parents in a number of Western countries with Covid-🧮?

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