Six people from the first team of the Young Pioneers participated in the tree planting. According to the plan, each person will plant 10 trees on average. One person did not come when the tree was actually planted, and the others still completed the team plan. In this way, how many more trees are actually planted per person on average.
少先队第一小队6人参加植树，按计划平均每人要栽10棵．实际栽树时有1人没来，其他人仍然完成了小队计划．这样实际平均每人多栽了多少棵．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">10 / 5</gadget>
<output>2</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>