There are 25% more fourth-grade students in interest schools than third-grade students, and 10% fewer fifth-grade students than fourth-grade students. There are 10% more sixth graders than fifth graders. If there are 38 more sixth-grade students than third-grade students, how many students are there in total from third to sixth grades?
兴趣学校的四年级学生比三年级学生多25%，五年级比四年级学生少10%．六年级学生比五年级学生多10%．如果六年级学生比三年级学生多38人，那么三～六年级共有学生多少人？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">1 * (5/4) * (9/10) * (11/10)</gadget>
<output>99/80 = around 1.2375</output>

<gadget id="calculator">(99/80) - 1</gadget>
<output>19/80 = around 0.2375</output>

<gadget id="calculator">38 / (19/80)</gadget>
<output>160</output>

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

<gadget id="calculator">200 * (9/10)</gadget>
<output>180</output>

<gadget id="calculator">180 * (11/10)</gadget>
<output>198</output>

<gadget id="calculator">160 + 200 + 180 + 198</gadget>
<output>738</output>

<result>738</result>