Divide (8/9) kilograms into 4 parts on average, one of which accounts for ((())/(())) of the total weight, what is its weight?
把(8/9)千克平均分成4份，其中的1份占总重量的((())/(()))，它的重量是多少．
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(8/9) * (1/4)</gadget>
<output>2/9 = around 0.222222</output>

<result>2/9 = around 0.222222</result>