How many seconds are there in a year?

There are 31,536,000 seconds in a year.
This is just a series of conversion factors.
1 year ##=(365 ” days”)/(1 ” year”)xx(24 ” hrs”)/(1 ” day”)xx(60 ” min”)/(1 ” hr”)xx(60 ” sec”)/(1 ” min”)##
You can see the all terms cancel except seconds (numerator) and year (denominator).
Plugging into a calculator, ##365xx24xx60xx60=31,536,000##
So the answer is that there are 31,536,000 seconds in a year.