A middle school has three grades of junior one, junior two, and junior three. The number of students in the first grade accounts for (4/11) of the other two grades, and the number of students in the second grade accounts for (1/4) of the other two grades. There are 800 students in the third grade of junior high school, how many students in the three grades? (column equation)
某中学有初一、初二、初三三个年级，初一年级人数占其他两个年级人数的(4/11)，初二年级人数占其他两个年级人数的(1/4)，已知初三年级有800人，三个年级共有多少人？(列方程)
<gadget id="calculator">800 * 11 * 4</gadget>
<output>35_200</output>

<gadget id="calculator">800 * 11</gadget>
<output>8_800</output>

<gadget id="calculator">800 * 4 * 4</gadget>
<output>12_800</output>

<gadget id="calculator">800 * 4</gadget>
<output>3_200</output>

<gadget id="calculator">35_200 + 8_800 + 12_800 + 3_200</gadget>
<output>60_000</output>

<gadget id="calculator">11 * 4</gadget>
<output>44</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">4 - 16 - 4 - 11 - 4</gadget>
<output>-31</output>

<gadget id="calculator">44 + 11 + 16 + (-31)</gadget>
<output>40</output>

<gadget id="calculator">60_000 / 40</gadget>
<output>1_500</output>

<result>1_500</result>