On the street in front of Guangming School, a telephone pole is erected every 25 meters, so how many meters are there between the first and the tenth?
光明学校门前的大街上，每隔25米竖了一根电线杆，那么第一根到第十根之间有多少米．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">9 * 25</gadget>
<output>225</output>

<result>225</result>