The students in class 61 participated in the tree planting activity, and 49 trees survived, and one tree did not survive. What is the survival rate?
六一班学生参加植树活动，成活了49棵，一棵未成活，成活率是多少．
<gadget id="calculator">49 + 1</gadget>
<output>50</output>

<gadget id="calculator">49 / 50</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>