x1= 21,000$, x2= 7%

I need full detailed steps please don't use excel or tables, PLEASE DON'T USE EXCEL OR TABLES, thank you.

Question (1): Three months ago, Jim purchased $X1 of U.S. Treasury bonds. These bonds have a 30-year maturity period, and they pay dividends every three months at an APR of x2%. However, today's interest rates for similar securities have risen to a (x2+1)%APR (compounded quarterly). In view of the interest-rate increase to (x2+1)%, what is the current value of Jim's bonds today