A factory plans to use 3,800 kilograms of coal in April, but actually uses 3,230 kilograms of coal. How many kilograms of coal can be saved on average every day?
某工厂四月份计划用煤3800千克，实际用煤3230千克，平均每天节约用煤多少千克？
<gadget id="calculator">3_800 - 3_230</gadget>
<output>570</output>

<gadget id="calculator">570 / 30</gadget>
<output>19</output>

<result>19</result>