In proper scientific units (we use the SI system in Europe) the unit of time is the second. So I am approximately 1.05 billion seconds old, or 33 and a quarter years old, but people say I look much younger. If you want to know how many seconds old you are just multiply your age in years by 31.5 million. So for example, if you are 15 years old then:
31.5 million x 15 = 473 million seconds old 🙂
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