How set labels on the X and Y axises by equal intervals in R ggplot?

Question

Let consider a simple plot

library(tidyverse)

mtcars %>% 
  ggplot(aes(mpg, disp)) +
  geom_point() +
  geom_smooth()

It automatically set labels on Y axis 200-400 with 200 points intervals, and 10-15-20-25-30-35 on X axis with 5 points intervals.

How to setup let say 50 points intervals on Y axis, and 10 points on X?

Thanks