The toy factory produces a batch of toys. It has been in production for 9 days, with an average of 110 per day, and there are still 390 left to be produced. How many toys are there in this batch?
玩具厂生产一批玩具，已经生产了9天，平均每天生产110个，还差390个没生产，这批玩具一共有多少个？
<gadget id="calculator">110 * 9</gadget>
<output>990</output>

<gadget id="calculator">990 + 390</gadget>
<output>1_380</output>

<result>1_380</result>