There are 50 boys in the sixth grade, and 80% more girls than boys. How many students are there in the sixth grade?
六年级有男生50人，女生比男生多80%，求六年级一共有学生多少人？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">50 * (9/5)</gadget>
<output>90</output>

<gadget id="calculator">90 + 50</gadget>
<output>140</output>

<result>140</result>