During processing in a steel mill, a $3\mathrm{.}3$ kN steel casting at $4258$C is quenched

by plunging it into a $2$ m$3$ oil bath, which is initially at a temperature of $388$C$.$

After the casting cools and the oil bath warms, what is the final temperature of

the two? The weight per unit volume of the oil is $8\mathrm{.}8$ N$/$L$.$