(50 mile/gallon) x (1.609344 km/mile) x (1 gallon/3.7854 liter) = 21.26 km/liter
We just noticed that this is not what the question asked, but it's
such an elegant solution that we decided to leave it here anyway.
The answer to the question is:
(50 miles/gallon) x (gallon/3.7854 liter) = 13.209miles/liter (rounded)
1 liter per 100 km = 282.5 miles per Imperial gallon.
10.5 km = 10.5/1.609344 miles = 6.524 miles
1.73 kg per liter = 14.4 pounds/gallon (US)
12.94966 kilometers per liter equals 36.58 miles per Canadian gallon.
In the UK, about 4.55 liters per gallon and in the US, about 3.79 liters per gallon.
21 miles per gallon is 8.928 kilometers per liter.
22 (kilometers per liter) = 51.75 miles per gallon.
9.6 (kilometers per liter) = 22.56 miles per gallon.
10 (kilometers per liter) = 23.52 miles per gallon.
45 miles per gallon = 19.13 kilometers per liter.
30 miles per gallon = 12.75 kilometers per liter.
25 miles per gallon is 10.6285927 kilometers per liter
30 miles per gallon equates to about 7.925 miles per liter of gasoline.
1 (kilometer per liter) = 2.35 miles per gallon. (2.35214583 to be exact).
15 (kilometers per liter) = about 35.3 miles per gallon.
8.3 kilometers per liter is about 19.5 miles per gallon.
20 miles per gallon = just over 8.5 kilometers per liter.