Example:
15 DVD (1 layer, 1 side) = 6.055904e+11 b
1 DVD (1 layer, 1 side) = 4.037269e+10 b | 1 b = 2.476922e-11 DVD (1 layer, 1 side)
Conversion Steps:
15 × (4.037269e+10 / 1) = 6.055904e+11