A garden farm planted 4,500 trees last year, and this year plans to plant more (1/5) than last year. How many trees are planned to be planted this year?
某园林场去年栽树4500棵，今年计划比去年多栽(1/5)，今年计划栽树多少棵？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">4_500 * (6/5)</gadget>
<output>5_400</output>

<result>5_400</result>