need help with math?

1 year= 31,536,000,000 milliseconds

100 years=3,153,600,000,000

100 x 365 x 24 x 60 x 60 x 1000
= 36500 x 24 x 60 x 60 x 1000
= 876000 x 60 x 60 x 1000
= 52560000 x 60 x 1000
= 3153600000 x 1000
= 3153600000000 milliseconds

1 millisecond = 1/1000 second.
60 second per minute
60 minutes per hour
24 hours per day
365 days per year, but 364 days every 4 years.
25 "leap years" per century

(60,000)(60)(24)(365)(75) + (60,000)(60)(24)(364)(25) = 2.36E12 +7.86E11 = 3.146E12 milliseconds

In terms of chemistry, this is roughly the square root of a "mole", 6.02E23.

there are approximately:

3,153,600,000,000 seconds

1000 millisec. * 60 sec * 60 mins * 24 hours * 365 days * 100 years = 3153600000000

1,000,000 x 60 x 60 x 24 x 365 x 100 = milliseconds in 100 years

I think the answer is (assuming every year to have 365 days, and not taking into account the occurence of leap years) 3.1536 * 10 ^ 11 milliseconds