A simple repair.
1. Cut off electricity by flipping circuit breaker.
2. Remove shelves from oven.
3. Remove two screws that hold heating element to oven.
4. Wiggle electrical spade tips from the heating element.
5. Attach new heating element to spade tips.
6. Replace two corroded screws with new ones.
7. Turn on circuit breaker and verify that the new element works.
8. Replace shelves.