7.6. Along the shore of a round lake, apple trees grow. Petya and Vasya start walking from point $A$ on the shore in opposite directions along the shore and count all the apple trees they encounter, as well as all the apples growing on the trees. Meeting at some point $B$, they compared their results. It turned out that Petya counted twice as many apple trees as Vasya, and seven times as many apples as Vasya. They were surprised by this result and decided to repeat the experiment. They set off from point $B$ in the same directions as initially, and met again at point $C$. It turned out that on the way from $B$ to $C$, Petya again counted twice as many apple trees as Vasya, and seven times as many apples as Vasya. Their surprise grew even more, and they decided to repeat the experiment again. Setting off from $C$ in the same directions, they met at point $D$. It turned out that Petya again counted twice as many apple trees as Vasya. Who counted more apples on the way from $C$ to $D$ and by how many times?

Answer. On the way from $C$ to $D$, Vasya counted 3 times more apples than Petya.