204 students are lined up in 4 columns, each column has an equal number of people, and the distance between two adjacent people is 80 cm. How long is this student team?
204名学生排成4路纵队，每路纵队人数相等，前后相邻两人之间相隔80厘米，这支学生队伍多长？
<gadget id="calculator">204 / 4</gadget>
<output>51</output>

<gadget id="calculator">51 - 1</gadget>
<output>50</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">50 * (4/5)</gadget>
<output>40</output>

<result>40</result>