Answer:
630,720,000
Step-by-step explanation:
1 year consists of 365 days.
1 day has 24 hours, each hour has 60 minutes and each minute has 60 seconds.
The number of seconds in 365 days is 86,400*365 = 31,536,000 seconds.
So then if that's one year, just multiply the seconds by 20 years.
31536000*20
Jose has lived 630,720,000 seconds.
