There are 130 students in the fifth grade, the fifth grade is more than the sixth grade (4/9), how many students are there in the sixth grade? (solution with equation)
五年级有学生130人，五年级比六年级人数多(4/9)，六年级有多少人？(用方程解答)
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 + (4/9)</gadget>
<output>13/9 = around 1.444444</output>

<gadget id="calculator">130 / (13/9)</gadget>
<output>90</output>

<result>90</result>