You can write it as $24,000,000 or $24000000 or $24 million.
it would be 24000000, so yes you are correct.
Seeing as a googol of zeros would be 10^100 zeros, that number of zeros would be quite hard to write out. If you were to try and write out that many zeros by hand at 3 zeros per second, it would still take you 1.05699307 × 1092 years to write them all out.
As many as you can write.
There is just one way.
There are six zeros. You would write is as 65,000,000
It is: 131,000,000
It is: 1,500,000