Chewing gum in the game Bubble Gum will turn into a tool for opening locks. To go through the level, you need to open the lock, and it will tear the rope that blocks the path. On the castle you will see a certain number. It is it that will become decisive for solving the problem. By pressing the free section of the field, you will contribute to the appearance and inflating of the ball of chewing gum. Release the maximum size in numerical and physical terms. The resulting ball and number will be deducted from the numerical value of the lock. If not enough, inflate another ball until the number on the castle turns into zero and the rope will explode into a Bubble Gum.