Si loo xisaabiyo tirada ilbiriqsi ee uu qofku noolaa 20 sano, waxaan isticmaali karnaa qaacidada soo socota:

Tirada ilbiriqsi ee 20 sano = 20 sano x 365 maalmood/sanad x 24 saac/maalintii x 60 daqiiqo/saac x 60 sekan/daqiiqo

= 20 x 365 x 24 x 60 x 60

= 630,720,000 ilbidhiqsi

Sidaa darteed, qofka 20 jir ah wuxuu noolaa qiyaastii 630,720,000 ilbiriqsi.