The sixth grade students of a certain school participated in the model airplane competition at the Youth Science and Technology Activity Center of Yuhuatai District. If 8 people are transferred from group B to group A, the number of people in group A is 125% of that in group B. How many people will participate in the model airplane competition?
某校六年级学生在雨花台区青少年科技活动中心参加航模比赛，分成甲、乙两个组，甲、乙两组的人数比是7：8．如果从乙组调8人到甲组，则甲组人数是乙组的125%，参加航模比赛的一共有多少人？
<gadget id="calculator">7 + 8</gadget>
<output>15</output>

<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

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

<gadget id="calculator">(8/15) - (4/9)</gadget>
<output>4/45 = around 0.088889</output>

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

<result>90</result>