The road construction team has built a 1.2-kilometer-long road, and has already built several meters, leaving 0.45 kilometers to be repaired. Question: How many meters has the road construction team built?
修路队修一条1.2千米长的公路，已经修了若干米，还剩下0.45千米没有修，问：修路队已经修了多少米？
<gadget id="calculator">1.2 - 0.45</gadget>
<output>0.75</output>

<gadget id="calculator">0.75 * 1_000</gadget>
<output>750</output>

<result>750</result>