A bag of rice is 50 kilograms, and the 20 bags of rice in the grain store are sold out within 4 days. How many kilograms of rice does the grain store sell on average every day?
一袋大米50千克，粮店的20袋大米4天就卖完了．粮店平均每天卖多少千克大米？
<gadget id="calculator">20 / 4</gadget>
<output>5</output>

<gadget id="calculator">50 * 5</gadget>
<output>250</output>

<result>250</result>