faster this way, meet the master of instant mathematics , the lightning-fast shield leader pasha shutovll, in the modern world there is... a calculator, knock-knock-knock , everything, here, well, you need to learn to count, and not like that on a calculator you just counted everything. indeed, nonsense is not even interesting, bang, that's it, abacuses are much more interesting, they were invented right there in the 15th century bc, too, or when abacuses were invented, but i don’t know, and you can directly calculate anything you want on these abacuses, yes, but can you count without them? yes, mentally, yes, they do it like that, i add up the scores and sort of count, yes, what are you doing, those people who do mental arithmetic compete with each other, yes , i won some competitions somewhere, yes, at olympiads, but there are olympiads, yes, mathematics olympiads, but there are championships, there is no championship, there is only the world championship i'll run, this is it. i heard it in football, i heard it in football, but in mental arithmetic no, yes, yes, no, but what heights h