Is That A Big Number?

If Lifespan of rat (2 y) was a standard unit ...

Time since earliest wheeled vehicles (4,000 y)...more would be 2000 x Lifespan of rat

Time since the birth of Hero of Alexandria (2,014 y)...more would be 1000 x Lifespan of rat

Duration of Carthaginian Empire (504 y)...more would be 250 x Lifespan of rat

Duration of Roman Empire (503 y)...more would be 250 x Lifespan of rat

Duration of Egyptian Empire (500 y)...more would be 250 x Lifespan of rat

Duration of Dutch Empire (407 y)...more would be 200 x Lifespan of rat

Time since the death of Shakespeare (406 y)...more would be 200 x Lifespan of rat

Duration of British Empire (394 y)...more would be 200 x Lifespan of rat

Time since the first iron steamship crossed the English Channel (202 y)...more would be 100 x Lifespan of rat

Time since the first passenger steam railway service (199 y)...more would be 100 x Lifespan of rat

Lifespan of human being (80 y)...more would be 40 x Lifespan of rat

Time since introduction of the first mass-produced helicopter (Sikorsky R-4) (80 y)...more would be 40 x Lifespan of rat

Time since first Apple Macintosh Computer launched (40 y)...more would be 20 x Lifespan of rat

Time since first Tesla Model S launched (10 y)...more would be 5 x Lifespan of rat