The forest farm carried out tree planting activities. 3600 trees survived and 400 died. What is the survival rate of tree planting?
林场开展植树活动，成活3600棵，死亡了400棵，植树的成活率是多少？
<gadget id="calculator">3_600 + 400</gadget>
<output>4_000</output>

<gadget id="calculator">3_600 / 4_000</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(9/10) * 1</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>