There were originally 126 students in the sixth grade, of which girls accounted for 4/9 of the total number. Later, a few girls were transferred in. At this time, the ratio of boys to girls was 7:6. How many girls are there now?
六年级原有学生126人，其中女生占总人数的(4/9)，后来又转进了几个女生，这时男生和女生的人数比是7：6．现在女生有多少人？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 - (4/9)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">126 * (5/9) * (6/7)</gadget>
<output>60</output>

<result>60</result>