How can I divide one column of a data frame through another?

Question

I wanted to divide one column by another to get the per person time how can I do this?I couldn\'t find anything on how you can divide.

Here is some data that I want

Answer 1

Hadley Wickham

dplyr

packages is always a saver in case of data wrangling. To add the desired division as a third variable I would use mutate()

d <- mutate(d, new = min / count2.freq)