A bag of milk weighs 250 grams. Xiaohua's mother bought 4 bags of the same milk. How many kilograms of milk did she buy in total?
一袋牛奶重250克，小华的妈妈买了4袋同样的牛奶，一共买了多少千克牛奶．
<gadget id="calculator">250 * 4</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 / 1_000</gadget>
<output>1</output>

<result>1</result>