You cannot. Mgs (or milligrams) are a measure of mass while teaspoons are a measure of volume. The two are measures of different attributes and, according to the basic principles of dimensional analysis, conversion between the two is not valid without additional information - in this case a measure of density of the substance for which you want a conversion.
one
Divide by 5 to convert to metric teaspoons
divide by 5 to convert to metric teaspoons
Divide by 5 to convert to metric teaspoons
divide by 5 to convert to metric teaspoons
You divide by 5 to convert to metric teaspoons
Multiply liters by 202.9 to get teaspoons. (0.1 x 202.9 = 20.29 teaspoons).
how can you convet 200 grams of flour to teaspoons
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You don't. Milligrams is a measure of weight or mass. Teaspoons is a measure of volume.
A tsp is a measure of volume, not mass. You cannot convert between teaspoons and grams.
Divide by 48.