The school planted 48 sweet-scented osmanthus trees on Arbor Day, which is 20% less than that of Magnolia. How many trees of Magnolia are planted? (solution by equation)
学校在植树节种了48棵桂花，比白玉兰少20%，白玉兰种了多少棵？(用方程解)
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">48 / (4/5)</gadget>
<output>60</output>

<result>60</result>