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Mathematical calculation：
    Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
    It supports mathematical functions (including trigonometric functions).
    Current location：Mathematical operation > History of Mathematical Computation > Answer

    Overview: 4 questions will be solved this time.Among them
           ☆1 arithmetic calculations
           ☆3 integer calculations

[1/4 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 333333333333333×333333333333333
    Solution:
    333333333333333×333333333333333 = 111111111111110888888888888889
    Column vertical calculation:
                    333333333333333
✖                   333333333333333
                    999999999999999
                   999999999999999 
                  999999999999999  
                 999999999999999   
                999999999999999    
               999999999999999     
              999999999999999      
             999999999999999       
            999999999999999        
           999999999999999         
          999999999999999          
         999999999999999           
        999999999999999            
       999999999999999             
      999999999999999              
     111111111111110888888888888889

[2/4 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 777777777777777×999999999999999
    Solution:
    777777777777777×999999999999999 = 777777777777776222222222222223
    Column vertical calculation:
                    777777777777777
✖                   999999999999999
                   6999999999999993
                  6999999999999993 
                 6999999999999993  
                6999999999999993   
               6999999999999993    
              6999999999999993     
             6999999999999993      
            6999999999999993       
           6999999999999993        
          6999999999999993         
         6999999999999993          
        6999999999999993           
       6999999999999993            
      6999999999999993             
     6999999999999993              
     777777777777776222222222222223

[3/4 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 444444444444444×555555555555555
    Solution:
    444444444444444×555555555555555 = 246913580246913086419753086420
    Column vertical calculation:
                    444444444444444
✖                   555555555555555
                   2222222222222220
                  2222222222222220 
                 2222222222222220  
                2222222222222220   
               2222222222222220    
              2222222222222220     
             2222222222222220      
            2222222222222220       
           2222222222222220        
          2222222222222220         
         2222222222222220          
        2222222222222220           
       2222222222222220            
      2222222222222220             
     2222222222222220              
     246913580246913086419753086420

[4/4 Formula]
    Work: Calculate the value of equation 1×9+2×9.9+3×9.99+4×9.999+5×9.9999+6×9.99999 .
    Question type: Mathematical calculation
    Solution:
          1×9+2×9.9+3×9.99+4×9.999+5×9.9999+6×9.99999
        =9+2×9.9+3×9.99+4×9.999+5×9.9999+6×9.99999
        =9+19.8+3×9.99+4×9.999+5×9.9999+6×9.99999
        =9+19.8+29.97+4×9.999+5×9.9999+6×9.99999
        =9+19.8+29.97+39.996+5×9.9999+6×9.99999
        =9+19.8+29.97+39.996+49.9995+6×9.99999
        =9+19.8+29.97+39.996+49.9995+59.99994
        =28.8+29.97+39.996+49.9995+59.99994
        =58.77+39.996+49.9995+59.99994
        =98.766+49.9995+59.99994
        =148.7655+59.99994
        =208.76544
    Answer:1×9+2×9.9+3×9.99+4×9.999+5×9.9999+6×9.99999=208.76544


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