In the "10th Anniversary of Chongqing Directly Under the Central Government" essay competition, 80 sixth graders from a certain school won the first, second and third prizes. Among them, the number of winners of the third prize accounted for (5/8) of the number of winners in the sixth grade, and the ratio of the number of winners of the first and second prizes was 1:4. How many people in the sixth grade won the first prize?
在"重庆直辖十周年"征文比赛活动中，某校六年级有80人获一、二、三等奖．其中获三等奖的人数占六年级获奖人数的(5/8)，获一、二等奖的人数比是1：4．六年级有多少人获一等奖？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">80 * (5/8)</gadget>
<output>50</output>

<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">30 / 5</gadget>
<output>6</output>

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<result>6</result>