Let’s use a normal year which has 365 days on this calculation.
For this operation forget about using months in the calculation. They have irregular days and therefore complicate the operation. Lets use days, hours, minutes seconds and milliseconds.
Now if a normal year has 365 days and,
1 day has 24 hours
1 hour has 60 minutes
1 minute has 60 seconds and
1 second has 1000 milliseconds
Then the number of milliseconds in a year can be calculated in this way;
Days multiply by hours multiply by minutes multiply by seconds multiply by milliseconds will give you the number of milliseconds in a year.
365 days x 24 hours x 60 minutes x 60 seconds x 1000 milliseconds
That’s huge! It’s thirty one billion, five hundred and thirty six million milliseconds.
That’s 31 billion 622 million 400 thousands milliseconds. That’s awesome.