Multiplication – The 36

    9     9     9     9       9     9     9     9 
   x9    x8    x7    x6      x5    x4    x3    x2  
  
  
    8     8     8     8       8     8     8        
   x8    x7    x6    x5      x4    x3    x2      
  
  
   7     7     7     7       7     7          
  x7    x6    x5    x4      x3    x2      
  
  
   6     6     6     6       6    
  x6    x5    x4    x3      x2      
  
  
   5     5     5     5      
  x5    x4    x3    x2        
  
  
   4     4     4     3       3     2    
  x4    x3    x2    x3      x2    x2