There are (3/4) more science and technology books in the school library than 40% of literature and art books. It is known that there are 150 literature and art books. How many science and technology books are there?
学校图书室里科技书的(3/4)比文艺书的40%多3本，已知文艺书有150本，科技书有多少本？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">150 * (2/5)</gadget>
<output>60</output>

<gadget id="calculator">60 + 3</gadget>
<output>63</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">63 / (3/4)</gadget>
<output>84</output>

<result>84</result>