As New Year's Day is approaching, the school plans to plant a colored flag every 5 meters from the top to the end of the teaching building. The measured length of the top front of the building is 50 meters. How many flags does the school need to buy?
元旦即将来临，学校准备在教学大楼的顶部前沿从头到尾每隔5米插上一面彩旗，测得大楼的顶部前沿长50米．学校需要买多少面彩旗？
<gadget id="calculator">50 / 5</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<result>11</result>