Solve the Riddle

I am the sixth planet from the sun.

I have 82 moons. My nick name is "The Ringed Planet".

Who am I?

Think of a number

Step 1: Multiply it by 3

Step 2: Add 6

Step 3: Divide by 3

Step 4: Subtract the number chosen in step one from the answer in step 4.

What is the answer?

I am a huge hot star in the solar system.

You don't look directly on me. I can hurt your eyes.

Who am I?