A file has r $=25,000$ STUDENT records of fixed length. Each record has the following fields: Name $(40$ bytes$),$ Ssn $(9$ bytes$),$ Address $(60$ bytes$),$ PHONE $(10$ bytes$),$ Birth$\_$date $(8$ bytes$),$ Sex $(1$ byte$),$ Major$\_$dept$\_$code $(4$ bytes$),$ Minor$\_$dept$\_$code $(4$ bytes$),$ Class$\_$code $(4$ bytes, integer$),$ and Degree$\_$program $(4$ bytes$).$ An additional byte is used as a deletion marker. The file is stored on the disk with the following characteristics $($these are not parameters of any particular disk unit$)$: block size B $=512$ bytes; interblock gap size G $=147$ bytes; number of blocks per track $=25$; number of tracks per surface $=400.$ A disk pack consists of $18$ double$-$sided disks. $(18$ points$)$

Calculate the record size R in bytes.

Calculate the blocking factor bfr and

The number of file blocks b$,$ assuming an unspanned organization.