How many meters are (2/9) meters more than (4/9) meters?
比(4/9)米多(2/9)米的是多少米．
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

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

<gadget id="calculator">(4/9) + (2/9)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>