Your numbers for your situation is way nicer than mine. I live in the California Bay Area. Right now Regular 87 octane Gas is $4.8/gal and electricity is $0.38/kwh.

Nissan Leaf advertises 105 MPGe which is 3.12 mi/kwh.

10,000 miles / 32mpg * $4.8/gal = $1,500 a year for Corolla fuel 10,000 miles / 3.12mi/kwh * $0.38/kwh = $1,218 a year for Leaf electricity

This is ignoring things like charging losses but also oil and filter changes.