The number of students in class A of the sixth grade in a certain school is (4/5) the number of students in class B. After transferring 8 students from class B to class A, the number of students in class B is the number of students in class A (7/8). How many people are there in these two classes? people?
某校六年级甲班人数是乙班人数的(4/5)，从乙班调8人到甲班后，乙班学生是甲班人数的(7/8)，这两个班一共有多少人？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">7 + 8</gadget>
<output>15</output>

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">(5/9) - (7/15)</gadget>
<output>4/45 = around 0.088889</output>

<gadget id="calculator">8 / (4/45)</gadget>
<output>90</output>

<result>90</result>