In a closed economy, Y = $18 billion C = $14.4 billion I= $1.8 billion TR = $4.0 billion T = $3.0 billion Calculate each of the following (round each answer to one decimal place). Private savings = $ billion Public savings = $ billion Total savings in this economy = $ billion The government's budget deficit or surplus = $1 billion (enter a negative number for a deficit, positive number for surplus).