There are 29 people in Class A (1/3) and Class B (1/4). It is known that there are 42 people in class A, how many people are there in class B?
甲班人数(1/3)的和乙班人数(1/4)的共29人．已知甲班有42人，乙班有多少人？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">42 * (1/3)</gadget>
<output>14</output>

<gadget id="calculator">29 - 14</gadget>
<output>15</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">15 / (1/4)</gadget>
<output>60</output>

<result>60</result>