The /= assignment operator divides a variable by a numeric expression and assigns it to the given variable.
var /= num.exp
This divides the current value of x by 2 and assigns the result to x. It is equivalent to: x = x / 2
x /= 2
* arithmetic operator, *= assignment operator, += assignment operator, - arithmetic operator, -= assignment operator, := assignment operator, Arithmetic expressions, Arithmetic operators, Assignment, Numeric expressions, Precedence, precision statement, Relational operators, sum() function, \= assignment operator