The bookstore shipped 1,200 technical books, sold 394 on the first day and 206 on the second day, how many technical books are left?
书店运进1200本科技书，第一天卖了394本，第二天卖了206本，还剩多少本科技书？
<gadget id="calculator">1_200 - 394 - 206</gadget>
<output>600</output>

<result>600</result>