A number (2/9) is 198 less than its (5/6), what is this number?
一个数的(2/9)比它的(5/6)少198，这个数是多少．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">(5/6) - (2/9)</gadget>
<output>11/18 = around 0.611111</output>

<gadget id="calculator">198 / (11/18)</gadget>
<output>324</output>

<result>324</result>