Miao Miao School Aids Factory needs to produce 10,000 bags of teaching aids, with an average production of 206 bags per day, which has been produced for 43 days. How many bags are left unproduced?
苗苗学具厂要生产教学用具10000袋，平均每天生产206袋，已经生产了43天．还剩多少袋没有生产？
<gadget id="calculator">206 * 43</gadget>
<output>8_858</output>

<gadget id="calculator">10_000 - 8_858</gadget>
<output>1_142</output>

<result>1_142</result>