There are 108 people in the first grade who have subscribed to publications, among them (3/4) have subscribed to "Children's Stories Illustrated", and (2/3) have subscribed to "Good Children". people?
一年级有108人订了刊物，其中有(3/4)的人订了《儿童故事画报》，有(2/3)的人订了《好儿童》，问两种刊物都订的有多少人？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">108 * (3/4)</gadget>
<output>81</output>

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

<gadget id="calculator">108 * (2/3)</gadget>
<output>72</output>

<gadget id="calculator">72 - 108</gadget>
<output>-36</output>

<gadget id="calculator">81 + (-36)</gadget>
<output>45</output>

<result>45</result>