At Ashley's school, they start a reforestation campaign where each child plants a tree and each teacher plants 2 trees. The school has 40 classes with an average of 25 students and 3 teachers per class. How many trees will they have planted at the end of the campaign?
40 classes participate in the campaign, representing a total of 40 * 25 = 
<gadget id="calculator">40*25</gadget>
<output>1_000</output>
1000 students.
With 3 teachers per class, 40 * 3 = 
<gadget id="calculator">40*3</gadget>
<output>120</output>
120 teachers participate.
With one tree planted per student, 1000 * 1 = 
<gadget id="calculator">1000*1</gadget>
<output>1_000</output>
1000 trees are planted per student.
With 2 trees planted per teacher, 120 * 2 = 
<gadget id="calculator">120*2</gadget>
<output>240</output>
240 trees are planted per teacher.
Adding the trees planted by teachers and students, 1000 + 240 = 
<gadget id="calculator">1000+240</gadget>
<output>1_240</output>
1240 trees will have been planted at the end of the campaign.

<result>1_240</result>