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Follower Calcumana: a simulator to develop the ability to quickly count in the column;

- along with the classic account where you need to determine the result, there is a mode "Vybivakha" - find the numbers missing in the example;

- children can turn on the "no time" mode, in which they can practice and develop the skills of a fast account;

- for convenience, several levels of complexity are introduced, - the task depends on them. Try to win at the “Calculator” level - a level for those who really count quickly and correctly;

- the playing field is customizable - you can add the number of numbers in the task, as well as adjust the number of characters used in the number;

- support for skins will allow you to customize the look of the program to your taste;

- soft sounds in the style of "Zen" pleasantly brighten the time;

- Sport mode - check yourself by completing tasks for a while and without the ability to customize the playing field;

- saving the results for different modes allows you to track the dynamics and level of skill;

- a common table of points: your achievements are visible to other users, become the best in the world!