There are 77 people in the art group, and the music group has 7 people less than the art group (6/7). How many people are there in the music group?
美术小组有77人，音乐小组的人数比美术小组的(6/7)少7人，音乐小组有多少人？
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">77 * (6/7)</gadget>
<output>66</output>

<gadget id="calculator">66 - 7</gadget>
<output>59</output>

<result>59</result>