There are three boxes of nuts, among which there are 303 nuts in the first box, the nuts in the second box are all nuts (1/5), and the nuts in the third box are all nuts ( (n)/7) (n is a natural number). Then how many nuts are there in the third box.
有三箱螺帽，其中第一个箱子里有303只螺帽，第二个箱子里的螺帽是全部螺帽的(1/5)，第三个箱子里的螺帽是全部螺帽的((n)/7)(n是自然数)．则第三个箱子里有螺帽多少只．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">(1/5) + (5/7)</gadget>
<output>32/35 = around 0.914286</output>

<gadget id="calculator">1 - (32/35)</gadget>
<output>3/35 = around 0.085714</output>

<gadget id="calculator">303 / (3/35)</gadget>
<output>3_535</output>

<gadget id="calculator">3_535 * (5/7)</gadget>
<output>2_525</output>

<result>2_525</result>