Xiao Ming is 1.42 meters tall. He stands on the stool 0.18 meters higher than the door, and the door is 2.25 meters high. So how high is the stool?
小明身高1.42米，他站在凳子上比门高0.18米，门高2.25米，那么凳子高多少米？
<gadget id="calculator">0.18 - 1.42</gadget>
<output>-1.24</output>

<gadget id="calculator">2.25 + (-1.24)</gadget>
<output>1.01</output>

<result>1.01</result>