(PHP 4, PHP 5, PHP 7)
bcdiv — Divide two arbitrary precision numbers
$left_operand
   , string $right_operand
   [, int $scale = 0
  ] )
   Divides the left_operand by the
   right_operand.
  
left_operandThe left operand, as a string.
right_operandThe right operand, as a string.
scaleThis optional parameter is used to set the number of digits after the decimal place in the result. If omitted, it will default to the scale set globally with the bcscale() function, or fallback to 0 if this has not been set.
   Returns the result of the division as a string, or NULL if 
   right_operand is 0.
  
Example #1 bcdiv() example
<?php
echo bcdiv('105', '6.55957', 3);  // 16.007
?>