not getting an expected result with 2 numbers

[jdnwi]

		$numbers = [
			23.98,
			23.98,
		];
		$lr = new LargestRemainder($numbers);

		$result = $lr->round();

		$this->assertSame(array_sum($result), 47.0);

Both numbers are getting rounded to 24.0 where I expect them to be 24, 23. Is this a bug or am I using this incorrectly?