In the zoo, the elephants ate a total of 1053 kilograms of food in the first 3 days of a week, and an average of 400 kilograms of food per day in the last 4 days. How many kilograms of food did the elephants eat on average this week?
动物园里，大象一周的前3天共吃食物1053千克，后4天平均每天吃食物400千克，大象这一周平均每天吃多少千克食物？
<gadget id="calculator">400 * 4</gadget>
<output>1_600</output>

<gadget id="calculator">1_053 + 1_600</gadget>
<output>2_653</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">2_653 / 7</gadget>
<output>379</output>

<result>379</result>