Classes 3 and 2 line up to do exercises. If there are 6 people in each row, you can stand in 6 rows. If there are 3 more people in each row, how many rows can they stand in?
三2班排队做操，如果每排站6人，可以站6排．如果每排多站3人，可以站几排？
<gadget id="calculator">6 + 3</gadget>
<output>9</output>

<gadget id="calculator">6 / 9</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">6 * (2/3)</gadget>
<output>4</output>

<result>4</result>