The students planted colorful flags along the straight side of the playground, one every 4 meters, a total of 26 flags were inserted, how many meters is the distance from the first colorful flag to the last one.
同学们沿笔直的操场一侧插彩旗，每隔4米插一面，一共插了26面，从第1面彩旗到最后一面的距离有多少米．
<gadget id="calculator">26 - 1</gadget>
<output>25</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<result>100</result>