《汉书·志·律历志上》
上生六就加倍，下生六就减半，都以九作为除数。
上生六而倍之，下生六而损之，皆以九为法。
Add half if the upper birth is six, and subtract half if the lower birth is six, both divided by nine.
<s>[INST] Translate the following Classical Chinese text into modern Chinese: 上生六而倍之，下生六而损之，皆以九为法。 [/INST] 上生六就加倍，下生六就减半，都以九作为除数。</s>
Translate the following Classical Chinese text into modern Chinese: 上生六而倍之，下生六而损之，皆以九为法。
user
上生六就加倍，下生六就减半，都以九作为除数。
assistant