In the 2008 Beijing Olympic Games, China won 51 gold medals, 15 more than the United States. How many gold medals did the United States get?
2008年北京奥运会，中国夺得了51枚金牌，比美国多15枚，美国得到多少枚金牌．
<gadget id="calculator">51 - 15</gadget>
<output>36</output>

<result>36</result>