There are three classes in the sixth grade of Hope Primary School, the first class has 48 students, the number of the second class is (7/8) that of the first class, and the number of the third class is (9/7) times that of the second class. How many people are there in class three?
希望小学六年级有三个班，一班有48人，二班的人数是一班的(7/8)，三班的人数是二班的(9/7)倍．三班有多少人？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">9 / 7</gadget>
<output>9/7 = around 1.285714</output>

<gadget id="calculator">48 * (7/8) * (9/7)</gadget>
<output>54</output>

<result>54</result>