f$)$ A computer has a hard disk that rotates with a speed of $2400$vec$(RPM)($rotations per minute$),$ and a reported seek time of $5ms$ and transfer rate of $1$MByte$\frac{s}{s}.$ The hard disk has $4$ platters, $64$ per platter, $128$ sectors per track, and each sector has $512$ bytes.

$(4$ mart

What is the average access time of the hard disk, in ms$?$

What is the capacity of the hard disk, in Mbytes?