There are 23 boys and 22 girls in Class 1, accounting for 1/4 of the sixth grade. How many students are there in the sixth grade?
六1班有男生23人，女生22人，占六年级人数的(1/4)，六年级有学生多少人．
<gadget id="calculator">23 + 22</gadget>
<output>45</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">45 / (1/4)</gadget>
<output>180</output>

<result>180</result>