One of the loudest sound generators ever created is the Danley Sound Labs Matterhorn. When run at full power, the device uses an input power of \(40,000 \mathrm{~W}\). The output power registers \(94 \mathrm{~dB}\) at \(250 \mathrm{~m}\). What is the efficiency of this devicethat is, the ratio of output power to input power?