The cafeteria of the experimental school bought 4,000 kilograms of flour. After eating some, there were still 3 bags left, each bag 25 kilograms. How many kilograms did you eat?
实验学校食堂买来4000千克面粉，吃了一些后还剩3袋，每袋25千克，吃了多少千克？
<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">4_000 - 75</gadget>
<output>3_925</output>

<result>3_925</result>