number (8/9) is 2 less than the product of 18.5 and (4/5), find this number.
一个数的(8/9)比18.5与(4/5)的积少2，求这个数．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">18.5 * (4/5)</gadget>
<output>14.8</output>

<gadget id="calculator">14.8 - 2</gadget>
<output>12.8</output>

<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">12.8 / (8/9)</gadget>
<output>14.4</output>

<result>14.4</result>