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<?php $normal = '0.00000601'; $direct = bcdiv($normal, '3', 8); $referral = bcdiv($normal, '4', 8); $difference = bcsub(bcsub($normal, $direct, 8), $referral, 8); var_dump($direct, $referral, bcmul($difference, 10000 * 31, 8));

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