The reciprocal of a number is (5/9), how much is it greater than its (2/9).
一个数的倒数是(5/9)，它比它的(2/9)大多少．
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 / (5/9)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">1 - (2/9)</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">(9/5) * (7/9)</gadget>
<output>7/5 = around 1.4</output>

<result>7/5 = around 1.4</result>