Obviously reading a 200-page story book, I have read it for 3 days, and read 35 pages every day. How many pages are there yet?
明明看一本200页的故事书，已经看了3天，每天看35页．还有多少页没有看？
<gadget id="calculator">35 * 3</gadget>
<output>105</output>

<gadget id="calculator">200 - 105</gadget>
<output>95</output>

<result>95</result>