Peter multiplies

Peter try to calculate: 3/4 x 2/3

He did 3x3 to get 9 and 4 x 2 to get 8. The final answer is 8/9.

Can you explain the error and how to help?

What is the correct answer?

Correct answer:

x =  1/2

Step-by-step explanation:

$x=\frac{3}{4}\cdot \frac{2}{3}=\frac{3\cdot 2}{4\cdot 3}=\frac{6}{12}=\frac{1}{2}=0.5$

Try another example