Container A and Container B had some water. Container A had $$\frac{8}{9}$$ as much water as Container B. Then, 300 $$ml$$ of water was poured from Container A to Container B. After that, Container A had $$\frac{5}{12}$$ as much water as Container B. <hr> <input min="0" type="number" id ="imp5pg066q10_1" class="lineinput" placeholder="?" /> $$ml$$ was in the containers altogether.