The school cafeteria bought some radishes, ate (4/5), and ate 16 kilograms. How many kilograms do these radishes weigh, and there is still ((())/(())) left uneaten.
学校食堂买回一些萝卜，吃了(4/5)，吃了16千克，这些萝卜重多少千克，还剩((())/(()))没吃．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">16 / (4/5)</gadget>
<output>20</output>

<result>20</result>