A group of foreign tourists, 88 people can speak English, 60 people can speak French, 40 people can speak both languages, and 16 people don't understand both languages. How many people are there in this group of tourists?
一批外国游客，会说英语的有88人，会说法语的有60人，其中两种语言都能说的有40人，还有16人两种语言都不懂．这批游客共有多少人．
<gadget id="calculator">88 - 40</gadget>
<output>48</output>

<gadget id="calculator">60 - 40</gadget>
<output>20</output>

<gadget id="calculator">48 + 20 + 40 + 16</gadget>
<output>124</output>

<result>124</result>