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About $25 billion dollars per gram. Source: Wikipedia
1 gram = 1,000 = 103 milligrams
Potassium has a gram atomic mass of 39.1, to three significant digits (one more significant digit than "20 meq" has). Therefore, one meq = 39.1 mg, and 20 meq = 20(39.1) = 7.8 X 102 mg, to the justified number of significant digits.
A gram of carbohydrates has about 4 calories, a gram of protein has about 4 and a gram of fat has 9. Multiply the calories per gram by number of grams of each macronutrient and divide by the total number of calories to get the percent of calories coming from each macronutrient.
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