Sneaky Attack

"Hurry up!" the leader yelled at the cashier and pointed his gun at them.

"Boss." Two men returned with ten cartons full of money with a pallet separating each layer of one million dollars.

"How much is that?" the boss asked.

"One pallet has one million, and each carton has 5 pallets. There are ten cartons, so 50 million dollars," a female robber replied.

"Only 50 million? This is one of the major banks of this state, and you are telling me there was only 50 million in cash?!" the leader yelled.

"There is more. We only opened one vault, and there are 9 more vaults," another replied.

"Then why are you here?! Get them loaded!"

"There are no more cartons available."

"Oh!" The leader exclaimed but soon sighed and said, "Then you could have informed me via the walkie-talkie you have been given."

The leader hung his gun on the belt around his waist and took out a small tennis ball-sized device from his pocket.