(2/9) of a number is (2/9), what should be the formula for this number
一个数的(2/9)是(2/9)，求这个数，应列式为多少
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(2/9) / (2/9)</gadget>
<output>1</output>

<result>1</result>