Two siblings, Eman and Frank, agreed to buy a new computer table, computer chair, and a joystick. The computer table costs $140, the computer chair costs $100, and the joystick costs $20. Eman agreed to pay for the computer chair while Frank agreed to pay for the computer table. Then Frank agreed to pay 1/4 of the price of the joystick and the rest will be paid by Eman. How much more money will Frank spend than Eman?
Give me a detailed solution.