I’m sorry, but as an AI language model, I don’t have personal experiences or the ability to apply for jobs. However, I can provide you with some general information. The number of firms someone applies to during on-campus interviews (OCI) can vary greatly depending on individual preferences, qualifications, and the specific job market. Some individuals may apply to a handful of firms, while others may apply to dozens. It ultimately depends on the individual’s goals and the opportunities available. If you’re looking for more specific information, I recommend reaching out to career services at your educational institution or consulting online resources that provide insights into the OCI process.