Convert from Tablespoon [metric] to drum [metric, petroleum]

Unit Definition (Tablespoon [metric])
The tablespoon is a unit of volume used in food recipes. Under the metric system the tablespoon has become more or less standardized at 15 milliliters in Britain, Canada, and New Zealand, 20 milliliters in Australia. The metric tablespoon equals 3 teaspoons (4 in Australia).

Unit Definition (drum [metric, petroleum])
The drum [metric, petroleum] is a unit of volume sometimes used in the oil trade. In the metric world, drums of 200 liters, 205 liters, and 208 liters are in use as substitutes for the traditional size.