In Hongxing Village, 285 trees were planted in spring this year, and the death rate was 5%. As a result, 20 trees were planted in autumn, and the survival rate was 90%. What is the average survival rate in spring and autumn?
红星村今年春季植树成活285棵，死掉率为5%，秋季植树结果死亡20棵，成活率90%，求全年春秋两季的平均成活率是多少？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">20 / (1/10)</gadget>
<output>200</output>

<gadget id="calculator">200 * (9/10)</gadget>
<output>180</output>

<gadget id="calculator">285 + 180</gadget>
<output>465</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

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

<gadget id="calculator">285 / (19/20)</gadget>
<output>300</output>

<gadget id="calculator">300 + 200</gadget>
<output>500</output>

<gadget id="calculator">465 / 500</gadget>
<output>93/100 = around 0.93</output>

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

<gadget id="calculator">(93/100) * 1</gadget>
<output>93/100 = around 0.93</output>

<result>93/100 = around 0.93</result>