After planting 200 trees in class 6 and 2, 4 did not survive. What is the survival rate?
六2班进行植树活动植树200棵后，有4棵没成活，成活率是多少．
<gadget id="calculator">200 - 4</gadget>
<output>196</output>

<gadget id="calculator">196 / 200</gadget>
<output>49/50 = around 0.98</output>

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

<gadget id="calculator">(49/50) * 1</gadget>
<output>49/50 = around 0.98</output>

<result>49/50 = around 0.98</result>