We have the following data for a hypothetical closed economy: GNP = $12 comma 00012,000 Consumption (C) = $7 comma 8007,800 Government Purchases (G) = $1 comma 6001,600 Tax Collections (T) = $1 comma 2001,200 What is the value of private savings SP? $nothing (Enter your answer as an integer. Include a minus sign if necessary.) What is the value of government savings Sg? $nothing (Enter your answer as an integer. Include a minus sign if necessary.) In this closed economy, what must be the value of investment expenditure? $nothing (Enter your answer as an integer. Include a minus sign if necessary.)