please show steps to make easy to understand, i will give thumb up directly

(2 points) When using the Diffie-Hellman key exchange protocol, Trudy observed that Alice's first message is the number 8, and Bob's reply is the number 3. Given that the used generator g = 2, and the modulus p= 13. Trudy successfully determines Alices and Bob's shared key to be (Hint: Recall the properties of powers and use them properly!)