In the war against the country of thunder, Fog Hidden sent a total of 8000 ninja troops. Only 4000 ninja troops were sent to fight in the country of rain.
However, there are still more than 500 billion initiators left in Fog Hidden's hand.
So here comes the question.
If every Fog Hidden Ninja throws a detonator every second, 24 hours a day, how many can he throw?
The answer is 86400.
Eight thousand ninja troops keep throwing 24 hours a day. How many can they throw?
The answer is 691.2 million.
Then, the rest detonate