327 people came to the amusement park in the morning, 179 people left at noon, and 130 people came in the afternoon. How many people are there in the playground at this time?
游乐场上午来了327人，中午有179人离开，下午又来了130人，这时游乐场有多少人？
<gadget id="calculator">327 - 179</gadget>
<output>148</output>

<gadget id="calculator">148 + 130</gadget>
<output>278</output>

<result>278</result>