Dimension + Scale --> Unit

Space (dimension of length) + meters (scale) --> m (unit)

Time (dimension) + seconds (scale) --> s (unit)

Time (dimension) + year (scale) --> yr (unit)

Examples of unit conversions:

1 yr = 3.15 x 10⁷ s

1 Gyr = 1 Gigayear = 10⁹ yr = 10⁹ yr × (1) = 10⁹ yr × (3.15 x 10⁷ s / 1 yr) = 3.15 x 10⁹⁺⁷ s - yr / yr = 3.15 x 10¹⁶ s

your age = 20 yr = 20 yr × (1) = 20 yr × (3.15 x 10⁷ s / 1 yr) = (2 × 3.15) × 10¹⁺⁷ s - yr / yr = 6.30 x 10⁸ s

age of Universe = 14 Gyr = 14 Gyr × (1) = 14 Gyr × (10⁹ yr / Gyr) = 1.4 × 10¹⁺⁹ yr - Gyr/Gyr = 1.4 × 10¹⁰ yr

1.4 × 10¹⁰ yr = 1.4 × 10¹⁰ yr × (1) = 1.4 × 10¹⁰ yr × (3.15 x 10⁷ s / 1 yr) = (1.4 × 3.15) × 10¹⁰⁺⁷ s - yr/yr = 4.4 × 10¹⁷ s