The odometer of the car shows that the speed of the car does not exceed 100 kilometers per hour, and it has traveled 15,951 kilometers. After two hours, the numbers on the odometer indicate that they are the same when read from both sides. Find the speed of the car.
汽车里程表表明时速不超过100千米的汽车，已经行驶了15951千米，经过两小时后，里程表上的数字表示从两面读它们是一样的．求汽车的速度．
<gadget id="calculator">16_061 - 15_951</gadget>
<output>110</output>

<gadget id="calculator">110 / 2</gadget>
<output>55</output>

<result>55</result>