Xiao Ming reads a 245-page collection of fairy tales. Read 35 pages every day for the first 4 days. After reading 35 pages a day, how many days can I finish it?
小明看一本245页的童话集．前4天每天看35页．以后每天看35页，再用几天可以看完？
<gadget id="calculator">35 * 4</gadget>
<output>140</output>

<gadget id="calculator">245 - 140</gadget>
<output>105</output>

<gadget id="calculator">105 / 35</gadget>
<output>3</output>

<result>3</result>