canal is 838 kilometers long. It has been repaired for 12 days, and 11 kilometers are repaired every day. How many kilometers are left to be repaired?
一条水渠长838千米，已修了12天，每天修11千米，还剩多少千米没有修？
<gadget id="calculator">11 * 12</gadget>
<output>132</output>

<gadget id="calculator">838 - 132</gadget>
<output>706</output>

<result>706</result>