The school held a sports meeting. The students planted a small flag every 4 meters on the side of a straight track. From the starting point to the finish line, a total of 26 flags were inserted. If it were changed to one every 5 meters, how many more flags would there be?
学校召开运动会，同学们在一条笔直的跑道一旁每隔4米插一面小旗，从起点到终点，一共插了26面，如果改为每隔5米插一面，会多出多少面小旗？
<gadget id="calculator">26 - 1</gadget>
<output>25</output>

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

<gadget id="calculator">100 / 5</gadget>
<output>20</output>

<gadget id="calculator">20 + 1</gadget>
<output>21</output>

<gadget id="calculator">26 - 21</gadget>
<output>5</output>

<result>5</result>