1 dm^3 = 1 L
1 dm^3 = 10 dL
1 min = 60 s
1 s = 1/60 min
1,38 dm^3 / s = 1,38 * 10 dL / (1/60) min
1,38 dm^3 / s = 13,8 * 60 dL / min
= 828 dL / min