There are 3 classes in the fifth grade of the Experimental Primary School, the first class has 42 students, the second class has the same number of students (5/6), the third class has 9 students less than the second class (7/5), and the fifth grade has a total of students how many people?
实验小学五年级有3个班，一班有42人，二班的人数是一班的(5/6)，三班的人数比二班的(7/5)少9人，五年级共有学生多少人？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">42 * (5/6)</gadget>
<output>35</output>

<gadget id="calculator">7 / 5</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">35 * (7/5)</gadget>
<output>49</output>

<gadget id="calculator">49 - 9</gadget>
<output>40</output>

<gadget id="calculator">42 + 35 + 40</gadget>
<output>117</output>

<result>117</result>