Translate website interface to Chinese Simplified

We have a multilingual website https://planetcalc.com which currently supports English, Russian, Spanish, German, French, and Portuguese languages. We assume that it is ok for the Chinese language to use left-to-right order. Hence, we would like to translate the site's interface to Chinese Simplified. The total number of words to translate is 9730. Note that privacy pages have some legal wordings. If you apply, please quote your price per word.
If everything will be smooth, we can order the translation of the site's content later.