At the bottom of the ocean, pressure is high because of the weight of the
water. Is the swim-bladder of a fish
larger or smaller when the fish is
near the surface?

So what you would do is go through and add 3 teaspoons(tsp) 6 times because of the 6 tablespoons(tbsp). which will give you an answer of 18. another way is to multiply 3x6=18.

Hope the image of the frequency formula