2/3 * 6/1

To multiply the fractions \( \frac{2}{3} \) and \( \frac{6}{1} \), you multiply the numerators together and the denominators together:

\[ \frac{2 \times 6}{3 \times 1} = \frac{12}{3} \]

Now, simplify \( \frac{12}{3} \):

\[ \frac{12}{3} = 4 \]

So, \( \frac{2}{3} \times \frac{6}{1} = 4 \).