The school held a chorus to celebrate "June 1st". Lili stood at the last one in the last row of her class, using a number pair to express (6, 9), how many people are there in Lili's class.
学校举行庆"六一"大合唱，丽丽站在他们班最后一排的最后一个，用数对表示是(6，9)，丽丽班共有多少人．
<gadget id="calculator">6 * 9</gadget>
<output>54</output>

<result>54</result>