How many kilograms is (2/3) of (9/10) kilograms?
(9/10)千克的(2/3)是多少千克．
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(9/10) * (2/3)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>