In the tree planting activity organized by a class, 54 trees survived and 6 failed. What is the survival rate of this tree planting?
某班组织的植树活动，成活54棵，未成活6棵，此次植树的成活率是多少．
<gadget id="calculator">54 + 6</gadget>
<output>60</output>

<gadget id="calculator">54 / 60</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>