The chemical fertilizer station originally had some fertilizers. After 184 bags were shipped out, another 150 bags were shipped in. Now there are 388 bags of fertilizers in the station. How many bags of fertilizers were there in the station?
化肥站原有一些化肥，运出184袋后，又运进150袋，现在站内共有388袋化肥，站内原有多少袋化肥？
<gadget id="calculator">388 - 150</gadget>
<output>238</output>

<gadget id="calculator">238 + 184</gadget>
<output>422</output>

<result>422</result>