An I$/$O disk is constantly transferring data to memory using DMA. The average seek time is $8$ms and the dive rotation is $5400$rpm$.$ The I$/$O device read$/$write $512$byte sector for a typical disk and the transfer rate is $50$Mb$/$sec$.$ The CPU runs at $60$MHz$,(1$Hz$=1$cycle$/$sec$),$ and takes $300$ clock cycles and $900$ clock cycles to initiate and complete DMA transfer respectively. What is the average disk access time to complete the I$/$O disk job using the DMA?