The perimeter of a rectangular lawn is 160m, and its width is 60% of its length. What is the area of this lawn?
一块长方形草地的周长是160m，它的宽是长的60%，这块草地的面积是多少？
<gadget id="calculator">160 / 2</gadget>
<output>80</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">80 / (8/5)</gadget>
<output>50</output>

<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<gadget id="calculator">50 * 30</gadget>
<output>1_500</output>

<result>1_500</result>