Life expectancy from many countries using R

I am running a particular project in respect to the above subject matter.
https://www.codecademy.com/courses/learn-r/projects/life-expectancy-by-country-r

The code below is given problem. I have tried everything possible.

life_expectancy_quartiles <-quantile
(life_expectancy, c(0.25, 0.5, 0.75))

Error: <text>:13:17: unexpected ','
12: life_expectancy_quartiles <-quantile 
13: (life_expectancy,
                    ^