On Arbor Day last year, Yucai Primary School planted trees on campus. The survival rate of the trees is 96%. Of the trees planted, 24 did not survive. How many trees were planted last year?
去年植树节，育才小学在校园里植树．树木的成活率是96%，在所栽的树木中没有成活的有24棵，去年植树多少棵？
<gadget id="calculator">96 / 100</gadget>
<output>24/25 = around 0.96</output>

<gadget id="calculator">1 - (24/25)</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">24 / (1/25)</gadget>
<output>600</output>

<result>600</result>