In April 2007, my country's train speed was raised for the sixth time. After the speed of a train on a main line is increased, the average speed of the train is 200 kilometers per hour, which is 25% higher than before. How many kilometers per hour did the train travel on average?
2007年4月我国火车第六次提速．某火车干线上火车提速后平均每小时行200千米，比原来提高了25%，原来火车平均每小时行多少千米？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">200 / (5/4)</gadget>
<output>160</output>

<result>160</result>