There are 200 boys in grade six, and girls account for 4/5 of the boys. The number of grade six accounts for 20% of the total number of students in the school. How many people are there in the school?
六年级有男生200人，女生是男生人数的(4/5)，六年级的人数是占全校学生总人数的20%，全校有多少人？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">200 * (4/5)</gadget>
<output>160</output>

<gadget id="calculator">160 + 200</gadget>
<output>360</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">360 / (1/5)</gadget>
<output>1_800</output>

<result>1_800</result>