820 TVs have been sold in Suning Appliance Mall, and they have been sold for 47 days, and there are still 350 TVs that have not been sold out. Do you know how many TVs are sold in the Suning Appliance store on average every day?
苏宁电器商场进了820台电视机，已经卖了47天，还有350台没卖完．你知道苏宁电器商场平均每天卖多少台电视机吗？
<gadget id="calculator">820 - 350</gadget>
<output>470</output>

<gadget id="calculator">470 / 47</gadget>
<output>10</output>

<result>10</result>