$3.$ Rajeshwar Engineering Works at Patna has been given a contract to make seven components by Indian Railways. Each of these components requires processing on two machines M$1$ and M$2$ in the order M$1,$ M$2.$ The time $($in hours$)$ required by each of these jobs for processing on the two machines is given in Table below. Find the optimal sequence for processing the seven jobs.

Job M$1$ M$2$

A $92$

B $54$

C $810$

D $35$

E $46$

F $111$

G $76$