The Three Billy Goats Gruff Story

Three billy goats lived in a meadow that ran out of grass. They found a bridge leading to lush land but had to outsmart a troll living beneath it. The smallest and middle goats tricked the troll into waiting for the biggest goat. When the biggest goat crossed, he was strong enough to defeat the troll, allowing all three goats to enjoy the green grass safely.

What happened to the troll when the biggest billy goat crossed the bridge?

What did the billy goats do after they crossed the bridge?