In the 100-meter race, Xiao Ming was 10 meters ahead of Xiao Gang when he reached the finish line. At this time, Xiao Wang ran 81 meters. If the speeds of Xiao Gang and Xiao Wang remain the same, when Xiao Gang reaches the end point, how many meters will Xiao Wang be away from the end point?
在100米赛跑中，小明到达终点时领先小刚10米，这时小王正好跑了81米．如果小刚和小王的速度不变，当小刚到达终点时，小王距终点还有多少米．
<gadget id="calculator">81 / 90</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">100 * (9/10)</gadget>
<output>90</output>

<gadget id="calculator">100 - 90</gadget>
<output>10</output>

<result>10</result>