The mass of a box of chocolate is $$ \frac{5}{6}$$ kg.The mass of the chocolate is $$ \frac{1}{2}$$ kg.<br> The mass of the box is $$ \frac{A}{B} kg$$ when it's empty. <hr> A: <input min="0" type="number" class="lineinput" placeholder="?"><br>B: <input min="0" type="number" class="lineinput" placeholder="?"> (to the lowest term)