Xiaohua wants to read a 120-page book. After reading it for two days, the ratio of the ones that have been read to the ones that have not been read is 5:7. How many pages have you read?
小华要看一本120页的书，看了两天后，已看到的和没看的比是5：7，已看了多少页？
<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">120 * (5/12)</gadget>
<output>50</output>

<result>50</result>