Xiaofang and Xiaoqiang weigh 83 kilograms together, Xiaoming and Xiaofang weigh 82 kilograms together, Xiaoming and Xiaodong weigh 80 kilograms together, how many kilograms do Xiaoqiang and Xiaodong weigh together?
小芳和小强体重共重83千克，小明和小芳体重共重82千克，小明和小东体重共重80千克，小强与小东共重多少千克．
<gadget id="calculator">83 + 82 + 80</gadget>
<output>245</output>

<gadget id="calculator">82 * 2</gadget>
<output>164</output>

<gadget id="calculator">245 - 164</gadget>
<output>81</output>

<result>81</result>