In the amusement park, 158 tourists came in the morning, and then 42 people left; 142 tourists came in the afternoon, and then 68 people left; how many tourists are there in the amusement park now?
游乐园里，上午来了158位游客，随后有42人离开；下午又来了142位游客，随后有68人离开；现在游乐园里还有游客多少人？
<gadget id="calculator">158 - 42</gadget>
<output>116</output>

<gadget id="calculator">142 - 68</gadget>
<output>74</output>

<gadget id="calculator">116 + 74</gadget>
<output>190</output>

<result>190</result>