The distance between every two telegraph poles beside the road is 8 meters. How many meters did Xiao Ming run from the first telegraph pole to the 40th telegraph pole?
公路旁每两根电线杆之间的距离是8米，小明从第一根电线杆跑到第40根电线杆，共跑了多少米米．
<gadget id="calculator">40 - 1</gadget>
<output>39</output>

<gadget id="calculator">8 * 39</gadget>
<output>312</output>

<result>312</result>