There were 300 tourists in Red Bay in the morning, 185 people left at noon, and 157 people came in the afternoon. How many tourists are there in Red Bay?
红海湾上午有游客300人，中午有185人离去，下午又来了157人，这时红海湾有游客多少人？
<gadget id="calculator">300 - 185</gadget>
<output>115</output>

<gadget id="calculator">115 + 157</gadget>
<output>272</output>

<result>272</result>