A car travels 360 kilometers from A to B. Started to drive at a speed of 45 kilometers per hour as planned, and repaired the car for 2 hours due to a breakdown on the way. In order to arrive at point B on time, after repairing the car, he must travel an extra 30 kilometers per hour. The car is repaired how many kilometers away from place B.
一辆汽车从甲地开往乙地，要行360千米．开始按计划以每小时45千米的速度行驶，途中因汽车出现故障修车2小时．为了按时到达乙地，修好车后每小时必须多行30千米．汽车是在离乙地多少千米处修车的．
<gadget id="calculator">360 / 45</gadget>
<output>8</output>

<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<gadget id="calculator">45 * 6</gadget>
<output>270</output>

<gadget id="calculator">30 * 6</gadget>
<output>180</output>

<gadget id="calculator">180 - 360</gadget>
<output>-180</output>

<gadget id="calculator">270 + (-180)</gadget>
<output>90</output>

<gadget id="calculator">30 - 45</gadget>
<output>-15</output>

<gadget id="calculator">45 + (-15)</gadget>
<output>30</output>

<gadget id="calculator">90 / 30</gadget>
<output>3</output>

<gadget id="calculator">45 * 3</gadget>
<output>135</output>

<gadget id="calculator">360 - 135</gadget>
<output>225</output>

<result>225</result>