private static int numberOfRectangles ( int m , int n ) {
  return ( m + 1 ) * m * ( n + 1 ) * n / 4 ;
}

private static int numberOfRectangles ( int m , int n ) { return ( m + 1 ) * m * ( n + 1 ) * n / 4 ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (identifier)) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (identifier)) right: (decimal_integer_literal)))))