2471 * 0.3 = 741.3
2471-741.3 = 1729.7=Year 1
1729.7 * 0.3 = 518.91
1729.7 - 518.91 = 1210.79 = Year 2
1210.79 * 0.3 = 363.237
1210.79 - 363.237 = 847.553 = Year 3
847.553 * 0.3 = 254.2659
847.553 - 254.2659 = 593.2871 = Year 4
593.2871 is the answer.
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