Convert everything to the same unit, then add. (Either divide milliliters by 1000 to convert to liters, or multiply liters by 1000, to convert to milliliters.)
13 (half-milliliters) 26 (quarter-milliliters) 65 (tenth-milliliters) 650 micro-liters
13,000 milliliters is 13 liters.
13 To turn milliliters to liters you divide by 1000
13 kiloliters = 13,000 liters :)
14 liters.
13+13+13+13+13+13+13+13+13+13 = 13 * 10 = 130.
91
13 Imperial gallons = 59.0992 liters.
Nope.13 liters is about 3.4 gallons.
130 milliliters
13 centiliters is 130mL
13 liters = about 3.434 US gallons.