There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?
Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.