It has been 8 days to build a 2-kilometer road, with an average of 16 meters per day. How many meters are left to be repaired?
修一条2千米的路，已经修了8天，平均每天修16米，还剩下多少米没有修？
<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">16 * 8</gadget>
<output>128</output>

<gadget id="calculator">2_000 - 128</gadget>
<output>1_872</output>

<result>1_872</result>