Kassapassa, bhikkhave, bhagavato arahato sammāsambuddhassa vīsativassasahassāni āyuppamāṇaṁ ahosi.  
For Kassapa, the life-span was 20,000 years.

Tesaṁ āyunāpi parihāyamānānaṁ vaṇṇenapi parihāyamānānaṁ cattārīsavassasahassāyukānaṁ manussānaṁ vīsativassasahassāyukā puttā ahesuṁ.  
Those people who lived for 40,000 years had children who lived for 20,000 years.
Vīsativassasahassāyukesu, bhikkhave, manussesu aññataro puriso paresaṁ adinnaṁ theyyasaṅkhātaṁ ādiyi.  
Among the people who lived for 20,000 years, a certain person stole something from others.
Tesaṁ āyunāpi parihāyamānānaṁ vaṇṇenapi parihāyamānānaṁ vīsativassasahassāyukānaṁ manussānaṁ dasavassasahassāyukā puttā ahesuṁ.  
Those people who lived for 20,000 years had children who lived for 10,000 years.
aṭṭhavassasahassāyukānaṁ manussānaṁ vīsativassasahassāyukā puttā bhavissanti …  
20,000 years,
vīsativassasahassāyukānaṁ manussānaṁ cattārīsavassasahassāyukā puttā bhavissanti …  
40,000 years,

Suppiyānaṁ, bhikkhave, manussānaṁ vīsativassasahassāni āyuppamāṇaṁ ahosi.  
The lifespan of the Suppiyas was 20,000 years.