The survival rate of tree planting in a certain city this year is 85%. If a total of 5,000 trees are planted this year, how many survive?
某市今年植树的成活率是85%，如果今年一共植树5000棵，成活了多少棵？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">5_000 * (17/20)</gadget>
<output>4_250</output>

<result>4_250</result>