The ratio of boys to girls in Xinghua Primary School was 16:13. Later, a few girls transferred to the school. At that time, the school had 880 students; the ratio of boys to girls became 6:5. Ask how many girls are transferred.
兴华小学男、女生人数之比是16：13，后来有几名女生转入学校，这时全校有学生880人；男、女生人数之比变为6：5．问转入的女生有多少人．
<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">880 * (6/11)</gadget>
<output>480</output>

<gadget id="calculator">880 - 480</gadget>
<output>400</output>

<gadget id="calculator">13 / 16</gadget>
<output>13/16 = around 0.8125</output>

<gadget id="calculator">480 * (13/16)</gadget>
<output>390</output>

<gadget id="calculator">400 - 390</gadget>
<output>10</output>

<result>10</result>