Мили в километры, галлоны в литры, доллары в рубли

mile = float(2790)
rent = float(820)
cost_hotel = float(110)
gasoline = float(15.8)
cost_oil = float(3.89)
exchange_rate = float(77.4)
 
a = round(mile / gasoline, 2)
b = round(a * cost_oil, 2)
c = round(b + cost_hotel * 6 + rent, 2)
d = round(c * exchange_rate, 2)
print(a, b, c ,d) 
# 167718.06
cost = print("Количество необходимых денег на поездку:", round((mile / gasoline * cost_oil + (cost_hotel * 6) + rent) * exchange_rate,2), "рублей")
# 167718.45

e = round(((a*b, 2)/c, 2)+d, 2)

cost = print("Количество необходимых денег на поездку:", round(round(round(round(round((mile / gasoline, 2) * cost_oil, 2) + (cost_hotel * 6, 2)) + rent,2)) * exchange_rate,2), "рублей")
                                                                                       ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
TypeError: can't multiply sequence by non-int of type 'float'

cost = print("Количество необходимых денег на поездку:", round(round(round(round(round((mile / gasoline * cost_oil), 2) + (cost_hotel * 6), 2) + rent),2) * exchange_rate,3), "рублей")
#Количество необходимых денег на поездку: 167725.8 рублей

round(round(round(round(round((mile / gasoline * cost_oil), 2) + (cost_hotel * 6), 2) + rent),2) * exchange_rate, 2)

a = round(mile / gasoline, 2)
b = round(a * cost_oil, 2)
c = round(b + cost_hotel * 6 + rent, 2)
d = round(c * exchange_rate, 2)

cost = print("Количество необходимых денег на поездку:", round((mile / gasoline * cost_oil + (cost_hotel * 6) + rent) * exchange_rate,2), "рублей")
# 167718.45

mile = 2790.0
rent = 820.0
cost_hotel = 110.0
gasoline = 15.8
cost_oil = 3.89
exchange_rate = 77.4
 
a = mile / gasoline
b = a * cost_oil
c = b + cost_hotel * 6 + rent
d = c * exchange_rate
print(f'{a:.2f} {b:.2f} {c:.2f} {d:.2f}')
 
cost = (mile / gasoline * cost_oil + (cost_hotel * 6) + rent) * exchange_rate
print(f'Количество необходимых денег на поездку: {cost:.2f} рублей')