A cubical tank of edge 18 cm is initially filled with water up to $$\frac{1}{6}$$ of its height. Additional water is then poured into it until the water is up to $$\frac{5}{8}$$ of its height. (1 $$l$$ = 1000 cm³ <br> <input min="0" type="number" id ="imp5pg237q7_1" class="lineinput" placeholder="?" /> $$l$$ <input min="0" type="number" id ="imp5pg237q7_2" class="lineinput" placeholder="?" /> $$ml$$ additional water is poured into the tank.