(8/9)*(3/8)*(1/7).
(8/9)*(3/8)*(1/7)．
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(8/9) * (3/8) * (1/7)</gadget>
<output>1/21 = around 0.047619</output>

<result>1/21 = around 0.047619</result>