A village planted 2156 trees this year, 844 fewer than twice as many as last year. How many trees did you plant last year?
某村今年植树2156棵，比去年的2倍少844棵．去年植树多少棵？
<gadget id="calculator">2_156 + 844</gadget>
<output>3_000</output>

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

<result>1_500</result>