Number rules in formal language:  
Numbers fall under the mathematics letter ed, so they begin with the letter   

 
The letters are arranged based on the letters of the alphabet, meaning that the number zero is   

   and the number 6 is   

   
The ones are only in the letter, without vowels. The tens, then the hundreds, the thousands, after the ones letter are the vowels  

 respectively, the number letters.  
  

  Decimal numbers are drawn in the same way as letters, with a line added at the top  

  Twelve-digit numbers are drawn in the same way as letters, with a line added at the bottom  

Hexadecimal numbers are drawn in the same way as letters, with the addition of two lines at the top and bottom  

The sound of the letter comes after the number ten of the secondary letters and starts from zero, meaning that the number 10, 11, 12, 13, 14 and 15 in the numbers twelve and sixteen have a sound like the sound of the secondary letters starting from the letter zero  

Clarifying and applying the rules