The students planted a batch of saplings, 69 of which survived, and 13 did not survive. How much do the number of surviving saplings account for the total number of saplings?
同学们种下了一批树苗，有69棵成活了，还有13棵没成活．成活的树苗棵数占树苗总棵数的几分之几？
<gadget id="calculator">69 + 13</gadget>
<output>82</output>

<gadget id="calculator">69 / 82</gadget>
<output>69/82 = around 0.841463</output>

<result>69/82 = around 0.841463</result>