Convert from gigatonne to denaro [Italy]

Unit Definition (gigatonne)
The gigatonne is a metric unit of mass or weight equal to one billion metric tons (tonnes) or about 2.2046 trillion pounds. This very large unit is used, for example, in discussing the amounts of carbon added to the atmosphere by human activities.

Unit Definition (denaro [Italy])
The denaro is a traditional Italian weight unit equal to 24 grani; its size varied from about 1.1 grams to 1.25 grams.