Calculate Faster Than a Calculator

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Multiplication :

• Calculate The Value, (24 * 26) = ?

          2   4
     x   2   6         
          6 2 4             
       
          Now, How I did it ?!!!!     
                           
                    First, multiply last two digits of the both numbers which will be (4 * 6) = 24.Then,                    Multiply first two digits of both numbers in such a way where the digit 2 of the first no. (24)                will be multiplied by the by the digit of the followed number's (26) first digit after increasing
          that digit by '1'.So, that digit will become (2 + 1) = 3.
               
                    Now, 2 and 3 will be multiplied.So, we will get (2 * 3) = 6.
                   
          So, the whole result will be
                                                       First, (4 * 6) = 24 which will be placed at the end of the result,
                                                Then, {2 * (2 + 1)} = 6 which will be placed at the first end of  the                   result
           So, the result will be   (24 * 26) = 624.

• Another example,     37 * 33

                                            First, (7 * 3) = 21

                                            Then, {3 * (3 + 1)} = (3 * 4) = 12

                    

                        So, the result will be (37 * 33) = 1221