The gum will convert to amber through a chemical process that requires millions of years.

Starting a new private university in London would require hundreds of millions to achieve critical mass.

If such action is not taken, it will require hundreds of millions to make up the difference.

The new mines required millions of dollars and were highly automated.

Solving the equations would create an answer requiring millions or billions of numbers.

The scheme was one that required millions to begin with.

Current production requires millions of eggs and many months.

This is a lengthy process requiring millions of tries.

But statewide initiative campaigns require millions of dollars, and such efforts in larger states like California may be beyond their proponents' resources.

Helping Hand requires millions of rands each year to keep these social support projects running.