In the figure the current in resistance 6 is *i*_{6} = 1.33 A and the resistances are *R*_{1} = *R*_{2} = *R*_{3} = 1.57 Ω, *R*_{4} = 14.0 Ω, *R*_{5} = 7.57 Ω, and *R*_{6} = 3.79 Ω. What is the emf of the ideal battery?

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