Example:
15 b = 3.715383e-10 DVD (1 layer, 1 side)
1 b = 2.476922e-11 DVD (1 layer, 1 side) | 1 DVD (1 layer, 1 side) = 4.037269e+10 b
Conversion Steps:
15 × (1 / 4.037269e+10) = 3.715383e-10