A teacher said that half of the students in his class are studying mathematics, 1/4 are studying music, 1/7 are studying foreign languages, and the remaining 6 students are playing football on the playground. How many students are there in this class? ?
一位老师说，他班一半的学生在学数学，四分之一的学生在学音乐，七分之一的学生在学外语，还剩6名同学在操场上踢足球，则这个班一共有学生多少名？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">1 - (1/2) - (1/4) - (1/7)</gadget>
<output>3/28 = around 0.107143</output>

<gadget id="calculator">6 / (3/28)</gadget>
<output>56</output>

<result>56</result>