Then, even if you accept the prescrip fewer/less rule, there's the question of whether it's grammar by meaning or grammar by form. If you're saying it's fifty-two million, nine hundred ninety-four thousand, five hundred twenty-four bottles and fewer than thirteen million, two hundred forty-eight thousand, six hundred thirty-one of them are recycled, then it's definitely "fewer." But if you say one-quarter, you're not really counting, you're measuring, so it should be "less."