Teacher: Given a sentence in the Japanese, provide an equivalent translation in Bahasa Indonesia that retains the same meaning through the translation. In translation, keep numbers as it is.
Teacher: Now, understand the problem? If you are still confused, see the following example:
フランスのパリ、パルク・デ・プランスで行われた2007年ラグビーワールドカップのプールCで、イタリアは31対5でポルトガルを下した。
Solution: Italia berhasil mengalahkan Portugal 31-5 di grup C dalam Piala Dunia Rugby 2007 di Parc des Princes, Paris, Perancis.
Reason: This is a correct and accurate translation from Japanese to Bahasa Indonesia because translated text is just paraphrased of Japanese sentence. Also, it preserves the numbers as it is.

Now, solve this instance: 船が強風で沈んだとき、風速は毎時９０キロメートルだった。
Student:
Ada angin hingga 90 kilometer per jam ketika kapal tersebut tenggelam selama badai.