Cygnus A is an elliptical galaxy with an active nucleus from where two jets come out. The luminosity of the jets is about 1.5 × 10³⁸W. Let us assume that 10% of the rest mass energy of the matter spiraling into the central black hole is converted into the jets' energy. Estimate the rate at which the matter falls into the Cygnus A's supermassive black hole. Express your answer as the number of solar masses per century.