A chef is going to use a mixture of two brands of Italian dressing. The first brand contains \( 5 \% \) vinegar, and the second brand contains \( 15 \% \) vinegar. The chef wants to make \( 400 \) milliliters of a dressing that is \( 9 \% \) rinegar. How much of each brand should she use?
First brand: \(\square \)milliliters
Second brand: \(\square \)milliliters