Wang Lin went to Xinhua Bookstore and bought two story books, one was 1 yuan 7 cents and 4 cents, the other was 2 yuan 5 cents. She paid the salesperson 5 yuan, how much should she get back?
王琳到新华书店买了两本故事书，一本是1元7角4分，一本是2元5角，她付给营业员5元钱，应找回多少元？
<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">1 + (7/10) + (1/25)</gadget>
<output>87/50 = around 1.74</output>

<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 + (1/2)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 - (87/50) - (5/2)</gadget>
<output>19/25 = around 0.76</output>

<result>19/25 = around 0.76</result>