A garment factory receives an order to produce a batch of suits. An average of 60 sets are produced per day, and 350 sets remain unfinished after 15 days of production. How many suits are there in total?
一个服装厂接到生产一批西服的订单．平均每天生产60套，生产15天后还剩下350套没有完成．这批西服一共有多少套？
<gadget id="calculator">60 * 15</gadget>
<output>900</output>

<gadget id="calculator">900 + 350</gadget>
<output>1_250</output>

<result>1_250</result>