What is the difference between (5/7) of 35 minus (2/7) of 35?
35的(5/7)减去35的(2/7)，差是多少？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">35 * (5/7)</gadget>
<output>25</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">35 * (2/7)</gadget>
<output>10</output>

<gadget id="calculator">25 - 10</gadget>
<output>15</output>

<result>15</result>