@sh.add_function(dsp, outputs=['last_gear_box_ratio'])
def identify_last_gear_box_ratio(gear_box_ratios):
"""
Identify the gear box ratio of last gear.
:param gear_box_ratios:
Gear box ratios [-].
:type gear_box_ratios: dict[int, float | int]
:return:
Gear box ratio of last gear [-].
:return: float
"""
# noinspection PyUnresolvedReferences
return max(gear_box_ratios.items())[1]