Divide data frame by vector, by rows and not by columns [duplicate]

Answer 1

Another method:

for(r in 1:nrow(df))    
    df[r,2:4]= df[r,2:4]/div
df
  type  V1   V2    V3
1    A 0.1 0.01 0.001
2    B 0.1 0.01 0.001
3    C 0.1 0.01 0.001