(1 point) A certain economy has three interdependent sectors: oil, electricity, and grain. To produce $1 of oil requires $0.1 of oil, $0.1 of electricity, and $0.6 of grain. To produce $1 of electricity requires $0.3 of oil, $0.25 of electricity, and $0.15 of grain. To produce $1 of grain requires $0.25 of oil, $0.25 of electricity, and $0.35 of grain. There is also an external demand for $4000 of oil, $13000 of electricity, and $15000 of grain. To meet the external demand, the economy must produce $ of oil, $ of electricity, and $ of grain. Under this production schedule, the internal consumption of the economy is $ of oil, $ of electricity, and $ of grain