half a hin
"two liters" or "half a hin (which is two liters)". "Half" means one part out of two equal parts.
a third of a hin
"1.2 liters" or "One and one-fifth liters" or "half a hin (which is 1.2 liters)"
one-fourth of a hin
"a liter" or "one-fourth of a hin (which is almost 1 liter)"
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