A six$-$cylinder, $2\mathrm{.}5-$litre, capacity engine operates on $4-$stroke cycle at $3600$ rpm$.$ It is connected to a dynamometer that gives a torque reading $140$ N$-$m$.$ The mechanical efficiency of the engine is $65\%.$

$1)$The friction mean effective pressure $($in kPa$)$ is

$2)$The power lost to friction $($in kW$)$ is