<human>:  Help me calculate how much paint I need to order for my bedroom.
<bot>: To calculate the amount of paint you need to order for your bedroom, you'll need to know the surface area of the walls. Measure each of the walls in your bedroom and multiply the width times the height of each wall to calculate the total square footage. Finally, divide the total square footage of your bedroom by the coverage of the paint you plan to use to get the final amount of paint you need to order.