A flower garden is 60 meters long and 50 meters wide, and about 40 roses are planted per square meter. How many roses are planted in this flower garden?
一个花圃长60米，宽50米，每平方米大约种40棵玫瑰花，这个花圃共种了多少棵？
<gadget id="calculator">50 / 40</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">60 * (5/4)</gadget>
<output>75</output>

<result>75</result>