A 5.93 mm high firefly sits on the axis of and 13.9 cm in front of the thin lens a whose focal length is 6.03 cm. Behind lens A there is another thin lens, lens B, with a focal lengths of 25.3 cm. The two lenses share a common axis and are 61.7 cm apart.
How far sB from lens B is the final image located?
Enter your answer as a positive number.
sB = ____