There are 36 double rooms and 28 triple rooms in the hotel. How many passengers can the hotel accommodate?
旅社里有36个双人房间，28个三人房间，这个旅社一共可以住多少个旅客．
<gadget id="calculator">36 * 2</gadget>
<output>72</output>

<gadget id="calculator">28 * 3</gadget>
<output>84</output>

<gadget id="calculator">72 + 84</gadget>
<output>156</output>

<result>156</result>