<human>:  How does a washing machine work?
<bot>: A washing machine works by agitating a 4-5 gallon tub of water and soap, with the clothes being placed inside. It uses a water pump to fill the tub with water, and then moves the clothes through the water and the soap or detergent to get them clean. It spins the garments at a set speed to help rinse all the soap off. Finally, it drains the water, allowing the clothes to come out clean and dry.