Huanggang Primary School built a new garden with a length of 25 meters and a width of 14 meters. A fountain with an area of 19 square meters will be built in the middle of the garden. Turf needs to be laid in other places. How much turf will the school buy?
黄冈小学新建了一个长25米、宽14米的花园，花园中间要建一个面积为19平方米的喷水池，其他地方需要铺草皮，那么学校要买多少草皮．
<gadget id="calculator">25 * 14</gadget>
<output>350</output>

<gadget id="calculator">350 - 19</gadget>
<output>331</output>

<result>331</result>