The projected benent obligation was $480mililion at the beginning of the year. Service cost for the year was $25 mition. At the end of the yeak, pension benens paid by the trustee were $22 million and there were no pension-related othier comipiahenstive incorme accounts. The actuarys discount rate was 5% : What was the amount of the projected benefit obligation at year-end? Nete: Enter your answer in millions (i.e., 10,000,000 should be entered os 10)