There are 400 girls in a certain school, and girls account for 5/8 of the total number of students in the school. How many students are there in the school? (solution by equation)
某学校有女生400人，女生占全校人数的(5/8)，该校有多少人？(用方程解)
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">400 / (5/8)</gadget>
<output>640</output>

<result>640</result>