Please show and explain so I can learn

\begin{tabular}{|l|l|l|} \hline & Arrival Time & Burst Time \\ \hlineP1 & 0 & 10 \\ \hline P2 & 2 & 5 \\ \hline P3 & 2 & 3 \\ \hline \end{tabular} Scheduler: Shortest Remaining Time First (preemptive) The completion time of P1 is The completion time of P2 is The completion time of P3 is The average turnaround time is . Note: An equation like (tt1+tt2+tt3)/3 is exactly what wanted and in the sequence of TT for P1, P2 and then P3! The average response time is . Note: An equation like (rt1+rt2+rt3)/3 is exactly what wanted and in the sequence of RT for P1, P2 and then P3