There are 190 students in the fifth grade of a certain elementary school, accounting for 19% of the total number of the school. The number of students in the sixth grade is 80% less than the total number of the school. How many students are there in the sixth grade?
某小学五年级有190人，占全校总人数的19%，六年级学生人数比全校总人数少80%，六年级有学生多少人？
<gadget id="calculator">19 / 100</gadget>
<output>19/100 = around 0.19</output>

<gadget id="calculator">190 / (19/100)</gadget>
<output>1_000</output>

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

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1_000 * (1/5)</gadget>
<output>200</output>

<result>200</result>