Question

2,000,000 mg = how many kg?

Answer 1

`1kg=1,000g\\1g=1,000mg\\\\therefore\\1kg=1,000*1,000mg=1,000,000mg\to1mg=(1)/(1,000,000)kg\\\\2,000,000mg=(2,000,000)/(1,000,000)kg=\boxed{2kg}`