Enter the transmission gear ratio; the ratio of rotation of the input and output shaft of the transmission.
For example, if the gear ratio is 2.97:1 (2.97 to 1) then for 2.97 turns of the input shaft the output shaft turns one full turn. And for one turn of the input shaft, the output shaft turns 1/2.97 or 0.3367 turns.
If no transmission, enter 1.0.