This year's Arbor Day, the students planted 190 trees, 10 of which did not survive, and then we replanted 10 more, all of which survived. What is the survival rate of the students planting trees this year?
今年植树节，同学们植了190棵树，有10棵没有成活，后来大家又补植了10棵，全部成活．今年同学们植树的成活率是多少．
<gadget id="calculator">190 - 10</gadget>
<output>180</output>

<gadget id="calculator">180 + 10</gadget>
<output>190</output>

<gadget id="calculator">190 + 10</gadget>
<output>200</output>

<gadget id="calculator">190 / 200</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>