A piece of target paper has three circles in total. If you hit the inner circle, you get 10 rings, if you hit the middle circle, you get 8 rings, and if you hit the outer circle, you get 6 rings. Xiaohua casts twice. How many rings will there be?
一张靶纸共三圈，投中内圈得10环，投中中圈得8环，投中外圈得6环，小华投了2次，得的环数会有多少种结果．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<result>5</result>