Would a saucepan weigh about 30000 ml?

No, a saucepan would not weigh about 30,000 milliliters. Milliliters (ml) measure volume, not weight. The weight of a saucepan depends on its material and size, but a typical saucepan might weigh between 500 grams to several kilograms, depending on its capacity and construction. To convert volume to weight, you would need to know the material's density.