Create a new file wall-painting.py
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All our friends are re-painting one wall of their rooms. They want us to figure out how much it's going to cost. Assume one gallon of paint covers 400 square feet.
Ask the user for:
- width of the wall
- height of the wall
- how much a gallon of paint costs
Figure out then print how much it will cost to paint the wall with one coat.
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Also ask the user for how many coats they're going to put on, and calculate that cost.
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You can only buy whole gallons of paint. Figure out a way to round up so that you know how many whole gallons to buy.
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Allow the user to enter multiple wall dimensions and it adds the total areas together before calculating the cost.