A cake is divided into 9 pieces on average, Huanhuan ate 2 pieces, the ((())/(())) of eating this cake.
一个蛋糕平均分成9块，欢欢吃了2块，吃了这块蛋糕的((())/(()))．
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<result>2/9 = around 0.222222</result>