Li Hua participated in the shooting competition and shot 20 rounds in total. It was agreed that 10 points would be scored for each hit, and 6 points would be deducted for each miss, resulting in 168 points. How many rounds did he hit in total?
李华参加射击比赛，共打20发．约定每中一发记10分，脱靶一发，则倒扣6分，结果得了168分．他一共打中了多少发．
<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<gadget id="calculator">200 - 168</gadget>
<output>32</output>

<gadget id="calculator">10 + 6</gadget>
<output>16</output>

<gadget id="calculator">32 / 16</gadget>
<output>2</output>

<gadget id="calculator">20 - 2</gadget>
<output>18</output>

<result>18</result>