There are 120 students in the fourth grade, 1/4 more students in the fifth grade than in the fourth grade, and 10 fewer students in the sixth grade than in the fifth grade. How many students are there in grade six?
四年级有学生120人，五年级的学生比四年级的多(1/4)，六年级的学生比五年级的少10人．六年级有学生多少人？
<gadget id="calculator">1 / 4</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">120 * (5/4)</gadget>
<output>150</output>

<gadget id="calculator">150 - 10</gadget>
<output>140</output>

<result>140</result>