MySQL如何更改innodb-log-file-size

According to the mysql documentation (Docs), in order to change innodb-log-file-size in step #4 I need to delete the binary logs. I have some concerns and questions about this. My current value for innodb-log-file-size is 5MB. So I would assume my binary log files are 5MB each (max). When I look at the bin-log directory I have a bunch of file names like 'mysql-bin.000001', 'mysql-bin.000002', etc. I believe these are the binary log files, but they are all quite a bit larger than 5MB. There are 2 files (ib_logfile0, ib_logfile1) that are 5 MB. So my question is ), in