A． The distance between B and B is 1200 kilometers. A car has traveled (3/4) from A to B. How many kilometers will it take to reach B?
A．B两地相距1200千米，一辆汽车从A地开往B地，已行了(3/4)，再行多少千米正好到达B地？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1_200 * (1/4)</gadget>
<output>300</output>

<result>300</result>