For greening mountains and rivers and planting trees, 34.76 million trees were planted in 2005, 4.76 million more than twice the number of trees planted last year. How many trees were planted last year?
绿化山河植树造林，2005年植树3476万棵，比去年植树的2倍多476万棵，去年植树多少棵？
<gadget id="calculator">3_476 - 476</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 / 2</gadget>
<output>1_500</output>

<result>1_500</result>