At 11:00 in the morning on the playground, Xiao Hong measured that the shadow length of a 50 cm wooden stick was 25 cm. At the same time, Xiao Gang measured that the shadow length of the flagpole was 4.5 meters. So what is the height of the school flagpole in meters?
上午11：00在操场上，小红测得50厘米的一根木棒影长是25厘米，同时，小刚测得旗杆的影长是4.5米，那么学校旗杆的高度是多少米．
<gadget id="calculator">50 * 4.5</gadget>
<output>225</output>

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

<result>9</result>