## Procedure Do the tricks

1. Find the near base
2. divide into two sections
3. left side is cross sum and right side multiplication of two values
4. for right side we need to take result number should be equal to the number of zeros in base

For better knowing we will take simple Example

1) Solve 7*8? It is easy for this but in the point of large numbers it is useful
Ans)    step by step

•  Finding the nearer base
7       near base is 10
8       near base is 10
• Finding the Deviation from Base
7         -3( it comes 10-7=  -3)
8         -2 ( it comes 10-8= -2)
• Next step DO the the third step
7          -3
8         -2
-----------------------------
Either (7+(-2) or (8+(-3)   |     multliply -3*-2( take result euqal to num of zeros in base)
5     |     6
So ans is  7*8  =  56

2.  Solve 999*996?

Ans)
•      Near Base is 1000
• Finding the Deviation
999          -1
996          -4
• FInd the ans  by cross sum and multiplication
999           -1
996          -4
--------------------------------
995     |       4( is the right ans but not because num of zeros in base is 3 so we will take 004)
=>             9997           -3
9999           -1
--------------------------------
9996    |       3(

So the final answer is  999*996   =   995004

3.Find  9997*9999?

Ans)
•      Near Base is 10000
• Finding the Deviation
9997          -3
9999          -1
• FInd the ans  by cross sum and multiplication
=>         9997           -3
9999           -1
--------------------------------
9996    |       3( is the right answer but not because num of zeros in the base is 3 so we will take 004)
=>        9997           -3
9999           -1
--------------------------------

9996    |       003

So the final ans is  999*996   =   9996003