school planted 10 more trees than the total number (1/5) on the first day to make a windbreak. On the second day, the number of trees planted was twice that of the first day. On the third day, 30 trees were planted and just finished. , how many trees were planted in the school?
某校为了制造防风林进行植树活动，第一天栽了总数的(1/5)多10棵，第二天栽的棵数是第一天的2倍，第三天栽了30棵刚好栽完，学校共栽了多少棵树？
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">30 + 10 + 20</gadget>
<output>60</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 2</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/5) - (2/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">60 / (2/5)</gadget>
<output>150</output>

<result>150</result>