A batch of 200 trees were planted, and 3 died. What is the survival rate of this batch of trees?
种一批树共200棵，死去了3棵，这批树的成活率是多少．
<gadget id="calculator">200 - 3</gadget>
<output>197</output>

<gadget id="calculator">197 / 200</gadget>
<output>197/200 = around 0.985</output>

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

<gadget id="calculator">(197/200) * 1</gadget>
<output>197/200 = around 0.985</output>

<result>197/200 = around 0.985</result>