How do I measure one fifth of a tablespoon?

To measure one-fifth of a tablespoon, you would first need to determine the total volume of the tablespoon. A standard tablespoon is equivalent to 3 teaspoons, so it is approximately 15 milliliters. To find one-fifth of this amount, you would divide 15 by 5, which equals 3 milliliters. Therefore, one-fifth of a tablespoon is equivalent to 3 milliliters.