There are 144 students in the sixth grade of Hope Primary School, and the ratio of male students to female students is 5:4. How many girls do you hope there are in the sixth grade of elementary school?
希望小学六年级共有144名学生，男同学和女同学的人数比是5：4．希望小学六年级有女生多少名？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">144 * (4/9)</gadget>
<output>64</output>

<result>64</result>