In the photo, Yao Ming's height is 5 centimeters, but his actual height is 2.29 meters. What is the scale of this photo.
在照片上姚明的身高是5厘米，他的实际身高是2.29米．这张照片的比例尺是多少．
<gadget id="calculator">2.29 * 100</gadget>
<output>229</output>

<gadget id="calculator">5 / 229</gadget>
<output>5/229 = around 0.021834</output>

<result>5/229 = around 0.021834</result>