The school plans to green an open space of 300 square meters. First, set aside (4/5) of the total area to plant trees, and then plant flowers and grass in the rest of the open space at a ratio of 5:7. How big is the area for planting flowers?
学校计划绿化一块300平方米的空地，先划出总面积的(4/5)种树，剩下的空地按5：7种花和种草．种花的面积是多大？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">300 * (1/5) * (5/12)</gadget>
<output>25</output>

<result>25</result>