Stefani German a 40-year-oid woman, plans to retre at age 65 , and she wants to accumulate $430,000 over the noxt 25 years to supplement the refrement programs prowided by the federal 50 bonds. 4 Appendix) Stetari consils a financial advisor to determine how much money she should save esch year to meet her rebrement savings objective. The advisor tells Stelani that if she savet about a. How much addtional money does slefari need to accumudate over time to reach her coal of $430,000 ? b. How much must Stetani save to accumulane the sum calculated in part a over the next 25 yoars