Xiao Guang invites 7 children to come to his house for dinner. If each person has a rice bowl, 2 people have a vegetable bowl, and 4 people have a soup bowl, how many bowls are needed in total?
小光请7个小朋友来家里吃饭．如果每人一个饭碗，2人一个菜碗，4人一个汤碗，一共需要多少个碗．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">8 + 4 + 2</gadget>
<output>14</output>

<result>14</result>