Do it very slowly!! :)
Alternantly you could multiply the number of seconds in a minute by the number of minutes in an hour by the number of hours in a day by the number of hours in a year.
Or ask an 8 year old.
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An average life expectancy is about 79 years. To calculate the number of seconds in that time, you can multiply 79 years by the number of days in a year (365.25, accounting for leap years), then by the number of hours in a day (24), and finally by the number of seconds in an hour (3600). This results in approximately 2.49 billion seconds in an average lifespan.
MPH = miles per hour. In order to calculate hours from seconds, you just need to know that there are 3,600 seconds in an hour.
To calculate age in years from 1 million seconds, you divide 1 million by the number of seconds in a year. There are approximately 31,536,000 seconds in a year, so 1 million seconds is about 0.0317 years, which is roughly 1.01 months. Therefore, a person who lived for 1 million seconds would be just over 1 month old.
After 1,000,000,000 seconds. you will be 31 years, 251 days, 15 hours, 13 minutes and 4 seconds old.In order to calculate this, you calculate:1) the number of seconds in a year:-- 365.24 days/year * 24 hours/day * 60 minutes/hour * 60 seconds/minute = 31,556,736 seconds/year2) Get the number of years divisible by 1 billion seconds:-- 1,000,000,000 / 31,556,736 = 31 years3) Get the number of days from the remainder (of the above division operation, providing the answer 31.688955):-- 0.688955 * 365.24 = 251 days4) Get the number of hours from the remainder of that:-- 0.634074 * 24 = 15 hours5) Get the number of minutes from that remainder:-- 0.217777 * 60 = 13 minutes6) Get the number of seconds from that remainder:-- 0.066666 * 60 = 4 seconds
25 years = 788,923,149 seconds.