What is the difference between (2/3) minus the product of (7/15) and (3/14)?
(2/3)减去(7/15)与(3/14)的积，差是多少？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">3 / 14</gadget>
<output>3/14 = around 0.214286</output>

<gadget id="calculator">(7/15) * (3/14)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(2/3) - (1/10)</gadget>
<output>17/30 = around 0.566667</output>

<result>17/30 = around 0.566667</result>