$7.$ Given that it takes $0\mathrm{.}80$ ms to travel from one track to the next of a hard drive; that the arm is originally positioned at Track $15$ moving toward the low$-$numbered tracks; and that you are using the LOOK scheduling policy: Compute the total seek time to satisfy the following requests$4,40,35,11,14,$ and $7.$ Assume all requests are initially present in the wait queue. $($Ignore rotational time and transfer time; just consider seek time.$)$