The bottom bake unit burned out

Very simple. Two small hex shaped screws hold the unit to the back of the stove. Remove those with a small socket wrench. Rachet type makes the job easier. Gently pull the element from the back of the stove. Remove the two push-on wires from the element. They simple pull off. The elements have supporting feet toward the front. Those must be down to rest the element on the bottom of the stove. Replace the push-on wires, push the element back into the holes in the rear of the stove and screw the small hex shaped screws back into the oven wall. The job is done.