Honglei Garment Factory has been making a batch of school uniforms for 12 days, 1450 pieces per day, and there are still 109 pieces left to complete the task. How many school uniforms are there in total?
红蕾服装厂要做一批校服，已经做了12天，每天做1450件，还差109件就完成任务．这批校服共多少件？
<gadget id="calculator">1_450 * 12</gadget>
<output>17_400</output>

<gadget id="calculator">17_400 + 109</gadget>
<output>17_509</output>

<result>17_509</result>