The passage below comes from Emily's runaway imagination by Beverly Cleary.
The ride back to town was peaceful enough, although Emily was a little nervous lest they meet a cow in the middle of the road that might force them to stop. It would be awful if they had to stop now after all she had been through. When they came to Main Street, she said, “I can walk home from the store, Grandpa, as easy as not.”
Could you explain to me the meaning 'as easy as not'?
And if you don't mind, give me another example sentence.