How many monogram in 1 mg?

Answer 1

I think your question should read 'How many nanogram in 1 mg?'

A nanogram is 10-9 of a gram, and a milligram is 10-3 of a gram.

So your question becomes how many times will 10-9 fit into 10-3?.

For which the answer is obviously 106. or 1 million.