how plentiful mcg within a mg?

how plentiful mcg within a mg?
1000 micrograms are present in 1 milligram or
1000 micrograms = 1 milligram
100
Yes as above 100. Not ! It's 1000
1000mcg = 1mg
A mcg = microgram = 1/million
A mg = milligram = 1/thousand
1,000x1,000=1,000,000
1000!
boy! jon D is stupid