Dad took Xiao Ming to visit grandma by bus. They left at 8:30 am and arrived at 11:30 noon. The speed of the car is 85 kilometers per hour. How far is it from Xiao Ming's house to grandma's house?
爸爸带小明坐大巴车去看望奶奶，他们早上8：30出发，中午11：30到达．汽车每小时的速度是85千米，从小明家到奶奶家有多远？
<gadget id="calculator">3 * 85</gadget>
<output>255</output>

<result>255</result>