There are 1,500 students in the sixth grade of a certain school participating in biology, computer, and art interest group activities, and each student can only participate in one interest group. It is known that the number of people participating in the biology group is the computer group (4/5), and the number of people participating in the art group is the biology group (7/8). How many students are there in the art group?
某校六年级有1500名学生参加生物、电脑、美术兴趣小组活动，每名学生只能参加一个兴趣小组．已知参加生物组的人数是参加电脑组的(4/5)，参加美术组的人数是参加生物组的(7/8)，参加美术组的学生有多少人？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 + (5/4) + (7/8)</gadget>
<output>25/8 = around 3.125</output>

<gadget id="calculator">1_500 / (25/8)</gadget>
<output>480</output>

<gadget id="calculator">480 * (7/8)</gadget>
<output>420</output>

<result>420</result>