Huayu factory saves 6 kg of raw materials every day, so the original 7-day raw materials can be used for 10 days, how many kilograms of raw materials are used on average every day now.
华宇工厂每天节约原料6千克，因此原来7天的原料能用10天，现在每天平均用多少千克原料．
<gadget id="calculator">6 * 7</gadget>
<output>42</output>

<gadget id="calculator">10 - 7</gadget>
<output>3</output>

<gadget id="calculator">42 / 3</gadget>
<output>14</output>

<result>14</result>