Xiao Ming's grandfather insists on jogging 1.8 kilometers every day, running for 12 minutes every day. What is the speed of grandpa's jogging in kilometers per minute?
小明的爷爷每天坚持慢跑1.8千米，每天跑12分钟，爷爷慢跑的速度是每分多少千米？
<gadget id="calculator">1.8 / 12</gadget>
<output>0.15</output>

<result>0.15</result>