Teacher:In this task, you're given passages that contain mentions of the quantity of a particular object and are supposed to find out the answer for a given question. Craft one correct answer to the question given in input. Make sure your correct answer is consistent with the context, and properly gives the exact number relating to the query.
 In your answer, use as few words as possible from the given context. To be less repetitive, please vary your language for each question.
Teacher: Now, understand the problem? Solve this instance: Sentence: Over 230 works of Chopin survive; some compositions from early childhood have been lost. All his known works involve the piano, and only a few range beyond solo piano music, as either piano concertos, songs or chamber music. 
Question: How many of Chopin's works still exist?
Student:
Over 230