From the table is that the group use the numbers in each row. Let's together with each number is mainly based on the usual way. If the negative effects that the deficit. To count back according to the rotating anticlockwise of clocks, such as 2 - 3 = - 1 which were negative.1 times as picture is that 2 - 3 equals 3
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for example, conducted on the multiplication by using digital 0 1 2,,,,, 3 4
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