The analysis process is as follows:
From the right, the first digit in the numerical sequence table is "unit", the second digit is "ten digits", the third digit is "hundred digits", the fourth digit is "thousand digits", the fifth digit is "ten thousand digits", and so on.
13 is a two-digit number, including ten digits and one digit, where 1 is ten digits, indicating one 10, and 3 is one digit, indicating three 1.
Extended data:
One, ten, one hundred, one thousand, ten thousand, one hundred thousand, one million, ten million, one billion, ten billion, one hundred billion ... are all units of counting. The counting unit on "Unit" is "One" and the counting unit on "Ten" is "Ten".
The same number represents different values because of different digits. For example, among the three numbers of 6789, 9768 and 6987, the "9" of 6789 is in one unit, that is, 9 1, the "9" of 9768 is in a thousand miles, that is, 9 thousand, and the "9" of 6987 is in a hundred miles, that is, 9 hundred.
A number represented by a nonzero number is called a single digit. For example, 2, 4, 6 and 8 are all single digits. Numbers represented by two numbers (ten of which are not zero) are called double digits, and 10, 24, 19, 89 and 92 are all double digits.