On Arbor Day this year, Hongxing Primary School planted 72 trees, only 3 of which failed to survive, and then replanted 3 more, all of which survived. What is the survival rate of tree planting on Arbor Day this year?
今年植树节，红星小学种了72棵树，只有3棵未成活，后来又补种了3棵，全部成活．今年植树节植树的成活率达多少．
<gadget id="calculator">72 - 3</gadget>
<output>69</output>

<gadget id="calculator">69 + 3</gadget>
<output>72</output>

<gadget id="calculator">72 + 3</gadget>
<output>75</output>

<gadget id="calculator">72 / 75</gadget>
<output>24/25 = around 0.96</output>

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

<gadget id="calculator">(24/25) * 1</gadget>
<output>24/25 = around 0.96</output>

<result>24/25 = around 0.96</result>