Among the students participating in the mathematics competition, there are 10 more girls than boys. After the exam, all the boys will achieve excellent results, and 2/5 of the girls will not achieve excellent results. It is known that there are 46 male and female students who have achieved excellent results. The number of people accounts for (1/7) of the whole grade. How many people are there in the whole grade?
参加数学竞赛的学生中，女生比男生多10人，考试后男生会全部达到优良，女生则有(2/5)没有达到优良，已知男女生中取得优良成绩的共有46人，参加比赛的人数占全年级的(1/7)，全年级共有多少人？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">10 * (2/5)</gadget>
<output>4</output>

<gadget id="calculator">46 - 10</gadget>
<output>36</output>

<gadget id="calculator">4 + 36</gadget>
<output>40</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">40 / (8/5)</gadget>
<output>25</output>

<gadget id="calculator">25 + 10 + 25</gadget>
<output>60</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">60 / (1/7)</gadget>
<output>420</output>

<result>420</result>