If the ratio of male to female in a grade is 6:5, then boys account for ((())/(())) of the whole grade. If there are 121 students in the whole grade, how many girls are there?
某年级男女人数的比是6：5，则男生占全年级人数的((())/(()))，若全年级有121人，则女生有多少人．
<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">1 - (6/11)</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">121 * (5/11)</gadget>
<output>55</output>

<result>55</result>