Hello, how do you calculate these problems?

Assume that Georgia has a domestic investment of $1500billion, private domestic savings of $3000billion, and a government deficit of $1500

1500billion. Based on the national saving and investment identity, what is Georgia's trade deficit if government spending rises by $1000billion? Enter your answer in billions ofdollars.

Zambia has a trade deficit of $1500 billion, private savings of $3000 billion, and a government budget deficit of $4000billion.

Use the national savings and investment identity (and the numbers given) to determine the value of privateinvestment.