Principal Chen of Zhaojiagou spent 6,000 yuan to buy cement for hardening the playground, bought 400 bags, and left 400 yuan. How much is a bag of cement?
赵家沟陈校长用6000元买硬化操场的水泥，买了400袋，还剩400元．每袋水泥多少钱？
<gadget id="calculator">6_000 - 400</gadget>
<output>5_600</output>

<gadget id="calculator">5_600 / 400</gadget>
<output>14</output>

<result>14</result>