It takes about 365 days for the earth to circle the sun, which is 13 days more than four times the time for Mercury to circle the sun. How many days does it take for Mercury to circle the sun?
地球绕太阳一周的时间约是365天，比水星绕太阳一周所用的时间的4倍还多13天，水星绕太阳一周大约要多少天？
<gadget id="calculator">365 - 13</gadget>
<output>352</output>

<gadget id="calculator">352 / 4</gadget>
<output>88</output>

<result>88</result>