The SI base unit for mass is the kilogram. 1 kilogram is equal to 1000000 mg, or 1000000000 mcg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between milligrams and micrograms.
1 Your potato shell should be about 1/4-inch thick. 2  Mash the potato pulp and add the milk, sour cream, butter, salt and pepper and stir together with a whisk. 3  Carefully add 1/4 cup of cheddar cheese, the black beans and the corn.
Space the potatoes on a rack in the preheated oven so there is at least an inch of space around each potato. In a standard oven you should be able to have three rows with five potatoes in each row. Bake the potatoes for about 50 minutes. Use an oven mitt to remove one potato to test it. The potato is done if it feels soft and has a tender feel when you pierce it with a fork. If the potato is not done, put it back in and cook an additional 10 minutes.