code: function bcdiv(left_operand, right_operand, scale) {
      var first, second, result;
  
      if (typeof(scale) == 'undefined') {
          scale = libbcmath.scale;
      }
      scale   = ((scale < 0) ? 0 : scale);
  
      // create objects
      first   = libbcmath.bc_init_num();
      second  = libbcmath.bc_init_num();
      result  = libbcmath.bc_init_num();
  
      first   = libbcmath.php_str2num(left_operand.toString());
      second  = libbcmath.php_str2num(right_operand.toString());
  
      // normalize arguments to same scale.
      if (first.n_scale > second.n_scale) second.setScale(first.n_scale);
      if (second.n_scale > first.n_scale) first.setScale(second.n_scale);
  
  
      result  = libbcmath.bc_divide(first, second, scale);
      if (result === -1) {
          // error
          throw new Error(11, "(BC) Division by zero");
      }
      if (result.n_scale > scale) {
          result.n_scale = scale;
      }
      return result.toString();
  }
docs: bcdiv - Divide two arbitrary precision numbers
  
  @param string left_operand       The left operand, as a string
  @param string right_operand      The right operand, as a string.
  @param int [scale]               The optional parameter is used to set the number of digits after the decimal place in the result. You can also set the global scale for all functions by using bcscale()
  @return string                   The result as a string