It would take 1 year and a half to get from Spain to Mexico in history.
1 million years
1 million+ Years to be a diamonds... :/
912,500,000 years
It will take 25 years to make a million dollars!
A trillion dollars at a million [a] minute will take a billion minutes = 1901.3 years (approx).
6
It would take approximately 2.5 million years for a radio signal to travel from Earth to the Andromeda galaxy, which is about 2.5 million light-years away.
It could take over 200 million years to do so.
71/2 years
This is estimated at about 200 million years.
It seems there is a misunderstanding in your question. The population of Mexico City has never reached 7 billion; as of recent estimates, it is around 9 million within the city proper and about 21 million in the metropolitan area. The population growth of Mexico City has occurred over many decades, with significant increases in the 20th century. If you meant the growth from a different starting point, please clarify for a more accurate response.