Give me a quick answer to these 3 questions without looking it up:
How long is a million seconds?
How long is a billion seconds?
How long is a trillion seconds?
Discussion
I recall a billion seconds being close to 30 years.
12 days, 32 years, 300,000 years.
Ah, too many zeros on my trillion guess... The others were pretty close though 🤙
The last one is a thick layer of ice long ago. 
10.57 days
~31.7 years
~31,700 years