Throwing a battery in the soil will cause 190 square meters of land pollution, making it impossible for plants to grow. Xiao Ming picked up 15 used batteries on the grass in the park. How many square meters of land pollution can be reduced in total?
一节电池扔在土里会造成190平方米的土地污染，使植物无法生长，小明在公园的草地上拾起了15节废电池，共可减少多少平方米土地污染？
<gadget id="calculator">190 * 15</gadget>
<output>2_850</output>

<result>2_850</result>