To find out how many milliliters are in 3 pints, we start by converting pints to quarts and then quarts to milliliters.
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Convert pints to quarts:
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Convert quarts to milliliters:
Thus, -
Round to the nearest tenth: The value 1419.525 mL rounds to 1419.5 mL.
Therefore, the answer is 1419.5 mL.