I have failed to understand this question, where did the intercepts come from? on the x axis 22000 nd y axis 2644? how did those figures come and please explain the shifts of the budget constraint and the indifference curve, endowment point etc, thanks

Finlay receives 12,000 of income this period and 12,000 next period. At an interest rate of 20%, he consumes all his current income in each period. He has a diminishing marginal rate of time preference between consumption next period and consumption this period. If the interest rate rises to 25%, what will Finlay do? Explain, and support your answer with a fully labelled set of indifference curves showing the situation before and after the change. Since Finlay was consuming at his endowment point initially, the rise in interest rates means that he will definitely now become a saver reducing his first period consumption and increasing his second period consumption