When an element exists in nature by itself, it must have a charge of

Zero

In nature, processes are driven by the natural tendency to form the most stable products. Therefore, elements in nature are expected to exist with no net charge to them because they become unstable when they are charged. 

When elements or atoms are charged, they will find ways to neutralize their charges to once again form substances with no net charge. 

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.