There are 120 students in the fourth grade, which is 1/6 of the whole school, and the third grade accounts for 2/9 of the whole school. How many students are there in the third grade?
四年级有120人，是全校人数的(1/6)，三年级人数占全校人数的(2/9)，三年级有多少人？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">120 / (1/6)</gadget>
<output>720</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">720 * (2/9)</gadget>
<output>160</output>

<result>160</result>