Congcong's family drove 1,000 kilometers to the ancient capital. They drove 250 kilometers on the first day, 245 kilometers on the second day, and 305 kilometers on the third day. How many kilometers did you drive in three days?
聪聪一家开车去古都旅游，有1000千米，前一天行驶250千米，第二天行驶245千米，第三天行驶305千米．三天共行驶多少千米？
<gadget id="calculator">250 + 245 + 305</gadget>
<output>800</output>

<result>800</result>