Huanhuan and Xiaoxiao toss a coin to play a game of hopscotch. After tossing the coin, the person facing up jumps 3 spaces forward, and the person facing down moves back 1 space. Huanhuan and Xiaoxiao each toss 10 times The coin, Huanhuan jumped forward 22 grids, how many times did Huanhuan toss the coin face up?
欢欢和笑笑两人抛硬币玩跳格子游戏，抛下硬币后，正面朝上的人往前跳3格，正面朝下的人往后退1格，欢欢和笑笑各抛了10次硬币，欢欢往前跳了22格，欢欢抛下硬币正面朝上有多少次．
<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<gadget id="calculator">30 - 22</gadget>
<output>8</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">10 - 2</gadget>
<output>8</output>

<result>8</result>