Jianshe Township planted 4.14 million trees this year, an increase of 15% over last year. How many thousands of trees were planted last year?
建设乡今年植树414万棵，比去年增加了15%，去年植树多少万棵？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">414 / (23/20)</gadget>
<output>360</output>

<result>360</result>