There are 80 boys in the sixth grade of Chengnan Primary School, which is the number of girls (8/9). How many students are there in the sixth grade of Chengnan Primary School?
城南小学六年级有男生80人，是女生人数的(8/9)．城南小学六年级有多少人？
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">80 / (8/9)</gadget>
<output>90</output>

<gadget id="calculator">90 + 80</gadget>
<output>170</output>

<result>170</result>