Among the nine planets in the solar system, Mercury is the closest to the sun. It takes 365 days for the earth to go around the sun, which is 75 days less than five times the time for Mercury to go around the sun. How many days does Mercury orbit the sun? (solution with equation)
太阳系的九大行星中，离太阳最近的是水星．地球绕太阳一周是365天，比水星绕太阳一周所用时间的5倍少75天．水星绕太阳一周是多少天？(用方程解答)
<gadget id="calculator">365 + 75</gadget>
<output>440</output>

<gadget id="calculator">440 / 5</gadget>
<output>88</output>

<result>88</result>