What will come in place of the question mark (?) in the following number series ?
Cubes of consecutive odd natural numbers are added
319 + $$1^3$$ = 320
320 + $$3^3$$ = 347
347 + $$5^3$$ = 472
472 + $$7^3$$ = 815
815 + $$9^3$$ = 1544
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