There are 150 students in the sixth grade of elementary school, and 20 more students in the fifth grade than 80% of the sixth grade. How many people are there in the fifth grade?
小学六年级有150人，五年级的人数比六年级的80%还多20人，五年级有多少人？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">150 * (4/5)</gadget>
<output>120</output>

<gadget id="calculator">120 + 20</gadget>
<output>140</output>

<result>140</result>