Coal is delivered to a power plant at an average rate of ${132}\,\text{kg}/\text{s}$. For each kilogram of coal brought in, the plant also sucks in about $11.8\,\text{kg}$ of air to serve as oxidizer for combustion . The combustion produces exhaust gases and ash. If the ${660}\,\text{t}$ (tonnes) of ash are produced of per day, what is the average rate at which exhaust gases leave the plant? Exhaust Flux: $\text{kg}/\text{s}$