Pitot-static tubes are frequently used on airplanes to measure airspeed. Assume the plane is flying at an altitude of 32,810 ft (10 km), where the temperature is -8 C and the pressure is 250 mb. The Pitot-static tube measures a piezometric pressure difference corresponding to 1.206 psi. What is the airspeed in both m/s and mph? (Hint: Convert all quantities to SI units, find the velocity, then convert it to mph.)