There are 25 apple trees in the orchard, accounting for 20% of the total number of fruit trees. How many fruit trees are there in the orchard?
果园里苹果树25棵，占果树总数的20%，果园共有果树多少棵．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">25 / (1/5)</gadget>
<output>125</output>

<result>125</result>