Solve problem 3: Multiply the fractions (3)/(2) x (6)/(3) and simplify the result.

$$18 \div 6 = 3$$

Alternatively, we can simplify before multiplying:

$$\frac{3}{2} \times \frac{6}{3}$$

We can cancel out the common factor of 3 from the numerator of the first fraction and the denominator of the second fraction:

$$\frac{\cancel{3}}{2} \times \frac{6}{\cancel{3}} = \frac{1}{2} \times \frac{6}{1}$$

Now, multiply the remaining numerators and denominators:

$$\frac{1 \times 6}{2 \times 1} = \frac{6}{2}$$

Finally, simplify the fraction:

$$\frac{6}{2} = 3$$

The result is:

$$3$$