What is (4/7) of (4/7)? How many
(4/7)的(4/7)是多少？多少
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(4/7) * (4/7)</gadget>
<output>16/49 = around 0.326531</output>

<result>16/49 = around 0.326531</result>