The carpentry factory has been making a batch of chairs for 15 days, with an average of 148 chairs per day, and another 240 chairs can complete the task. How many chairs are there in total?
木器厂做一批椅子，已经做了15天，平均每天做148把，再做240把就可以完成任务．这批椅子一共有多少把？
<gadget id="calculator">148 * 15</gadget>
<output>2_220</output>

<gadget id="calculator">2_220 + 240</gadget>
<output>2_460</output>

<result>2_460</result>