Convert from ons [Dutch] to quintal [metric]

Unit Definition (ons [Dutch])
The ons is a Dutch unit of weight or mass, now used as a metric unit equal to the hectogram (100 grams, or about 3.5274 ounces).

Unit Definition (quintal [metric])
The quintal [metric] is a common metric unit of mass equal to 100 kilograms or approximately 220.4623 pounds. Notice that the metric ton is roughly equal to its non-metric predecessors, but the metric quintal is about twice the size of the traditional quintal.