What is 20 times the product of (6/7) and (7/15)?
(6/7)与(7/15)的积的20倍是多少？
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">(6/7) * (7/15) * 20</gadget>
<output>8</output>

<result>8</result>