For normal operation of the device, a voltage of 20 V is required, and the mains voltage is 120 V. The experimenter connected a voltage divider with arm resistances of 5 and 1 kOhm to the circuit, and before connecting the device with a high-resistance voltmeter, he checked that the voltage at the second resistance was really 20 V. However, the connected device did not work. The experimenter realized what was wrong and achieved normal operation of the device by connecting it to a voltage divider with a resistance of 250 and 100 ohms. Find the resistance of the device if and in this case it is connected to the second resistance of the divider.