The ratio of the number of students in the fifth grade to the sixth grade in Dongfang Primary School is 9:10. There are 270 students in the fifth grade and how many students in the sixth grade.
东方小学五年级与六年级学生人数的比是9：10，五年级共有学生270人，六年级共有学生多少人．
<gadget id="calculator">10 / 9</gadget>
<output>10/9 = around 1.111111</output>

<gadget id="calculator">270 * (10/9)</gadget>
<output>300</output>

<result>300</result>