Explain how to do this and provide a answer.

Answer:
The answer is 3.
Step-by-step explanation:
All you need to do is insert 3 and 2 into T and S's places because they give you the value of both or then. When you insert the numbers, you multiply them. It should look like this: (12(3)) divided by (6(2)). Then divided both the numbers in the order the equation is asking to get 3.