The Divide Equals assignment operator will assign a
new value to the variable in front of it: whatever
the variable's current value is divided by the value 
after the operator.

For example:

int A = 32;               /* A is 32  */

A /= 4;                   /* A = A / 4;  So A is now 8. */

A /= 2;                   /* A = A / 2;  So A is now 4. */