Досок в кубометре / цена за N досок

main.py

def planks_in_cube(height, width, length):
    return (1 * 1000 ** 3) / (height * width * length)

def price_for_planks(count, cube_price, height, width, length):
    planks_count_in_cube = planks_in_cube(height, width, length)
    one_plank_price = cube_price / planks_count_in_cube
    return one_plank_price * count

# price_for_planks(3, 36000, 50, 200, 2000)
# > 2160