Use print function without quotes. Output will be calculated answer.

 +       Addition
-        Subtraction
/        Floating point division
*        Multiplication


 Single slash / : Floating point division
-------------------------------------------------


 Double slash / / : Integer division
-------------------------------------------
Integer division gives answer in the minimal integer...



Double star ** : Power
------------------------------

Round function : 
-----------------------
  (1) print ( round ( multiplication ) )

 (2)  print ( round ( multiplication , How many digits after decimal ) )



Precedence Rule :


 If we calculate directly 2 + 3 - 4 / 5 * 6 
Python gives Answer 0.1999 by BODMAS rule.
Bracket Order Division Multiplication Addition Subtraction

 But if we add brackets to different operations, answer will be different. 

How this ?

 That's because python uses Precedence Rule.

 First priority Parenthesis
Second priority Exponent ( Powers, square, root )
Third priority * /  //  %  ( Multiplication, Division )
Fourth priority  +  -  ( Addition, Subtraction )


 1 ) Parenthesis : Highest
--------------------------------
    That means brackets.

 Python gives first priority to brackets.
 ( 3 + 2 )  =  5
   2  /  5    =  0 . 4
2 ) Exponent : Right to Left
------------------------------------
Power , square , cube , square root ... etc.

Eg. 2 raise to 3 raise to 2
Exponents calculates right to left. That is first calculate
 3 ** 2  =  9         ( Square of 3 )
 2 ** 9  =  512     ( 9 th power of 2 )
3 )  *  ,  /  ,  //  ,  %  :  Left to right
-------------------------------------------
    Multiplication, Point division, Integer division, Modulo

Eg.  25 / 2 * 3 % 4
Calculation works from Left to Right

    25 /  2      =   12 . 5
 12.5 * 3     =   37.5 
 37.5 % 4   =   1 . 5
4 )  +   ,   -  :  Left to right
-------------------------------------------
    Addition , Subtraction


 Eg. 5 + 3 - 2 + 4 
Calculation works from Left to Right

 5  +  3  =  8
8  -   2  =  6
6  +  4  =  10