Convert into seconds.

$3$ minutes $18$ seconds

Convert into seconds.

$2$ minutes $37$ seconds

Convert into seconds.

$10$ minutes $45$ seconds

Convert into seconds.

$6$ minutes $40$ seconds

Convert into seconds.

$5$ minutes $10$ seconds

If a school begins at $7:30 \mathrm{a}.\mathrm{m}.$ and works for $6$ hours, at what time will the school get over$?$