There are 140 students in the fifth grade in a certain school, which is 20 more than the total number of students in the school (3/8). Find the number of students in the whole school. What is the list?
某校五年级有学生140人，比全校总人数的(3/8)多20人，求全校人数，列式是多少
<gadget id="calculator">140 - 20</gadget>
<output>120</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">120 / (3/8)</gadget>
<output>320</output>

<result>320</result>