Chunlei Primary School planted trees this spring, among which 25 pine trees and 15 cypress trees were planted, and a total of 38 trees survived. Find the survival rate.
春蕾小学今年春天植树，其中种了25棵松树、15棵柏树，一共活了38棵．求成活率．
<gadget id="calculator">25 + 15</gadget>
<output>40</output>

<gadget id="calculator">38 / 40</gadget>
<output>19/20 = around 0.95</output>

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

<gadget id="calculator">(19/20) * 1</gadget>
<output>19/20 = around 0.95</output>

<result>19/20 = around 0.95</result>