Teaching Golem

The teaching Golem is located in Serbule Keep

The teaching Golem will give you a puzzle that you need to solve.

The puzzle that it gives you is

"King Rasmas had 5 evil viziers. One day he baked a batch of cookies for his queen, but the viziers ate them all when he wasn't looking.
So the king baked another batch, twice as big as the first. Each vizier ate six cookies from the second batch, but the king
managed to get the remaining 2/5 of the second batch to the queen. How many cookies did the king bake in total?"