How to solve this task?

[BashBedlam]

Here is how you can determine the hours and years that the journey will take at a given speed entered as kilometers per hour.

LIGHT_SPEED = 1079252849 # kilometers per hour
HOURS_PER_YEAR = 8766

alphaCentauri = 4

kilometers_per_hour = int (input ("Введите скорость в километрах в час:"))
speed = kilometers_per_hour / LIGHT_SPEED
years = alphaCentauri / speed
hours = years * HOURS_PER_YEAR

print("время в часах:", hours ,"час(ов)")
print ("Время в годах:", years, "год(ы)")