The survival rate of 250 trees planted in a community is 96%. How many trees did not survive this time?
某小区植树250棵成活率为96%，这次植树有多少棵没有成活．
<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">250 * (1/25)</gadget>
<output>10</output>

<result>10</result>