Can anyone solve the whole Problem for me?

Part two of the question asks The mean squared error (MSE) for Method 1 = (How many?) Thousand Gallons^2

Part three of the question asks The MAD for the Method 2 = (How many?) Thousand Gallons

Part four of the question asks The Mean Squared Error (MSE) = (How many?) Thousand Gallons^2

Following are two weekly forecasts made by two different methods for the number of gallons of gasoline, in thousands, demanded at a local gasoline station. Also shown are actual demand levels, in thousands of gallons: The MAD for Method 1= thousand gallons (round your response to three decimal places)