A 50 Hz, 100 kVA, single-phase transformer supplied with 2.6 kV has a turns ratio of 20 to 9. Primary and secondary resistances are 0.4 ohm and 0.012 ohm respectively and the corresponding leakage reactances are 4.5 ohm and 0.059 ohm each. Determine the equivalent resistance R_eq referred to the primary side. Show the numerical answer rounded to 3 decimals in ohm,