Xiaoqiang and Xiaohua collected a total of 180 stamps, and Xiaoqiang collected 6 more stamps than Xiaohua. How many stamps has Xiaohua collected?
小强和小华一共收集了180张邮票，小强收集邮票的张数比小华多6张．小华收集了多少张邮票？
<gadget id="calculator">180 - 6</gadget>
<output>174</output>

<gadget id="calculator">174 / 2</gadget>
<output>87</output>

<result>87</result>