9. In the example $(* *)^{3}=* * * 9$, replace the asterisks with digits to obtain a correct equation.
9. A two-digit number raised to the cube should not exceed 22, since $22^{3}=10648$ is a five-digit number. The cube obtained ends in 9, so the number being cubed also ends in 9. As a result, we have $19^{3}=6859$.