When a careless accountant remitted money to the owner of the goods, he looked at the payment payable on the invoice issued by the owner, which increased the payment to 10 times. A few days later, the owner remitted the extra 7020 yuan. If it is returned, how much is the actual payable payment?
一位粗心的会计在给货主去汇款时，把货主开过来的发票上的应付货款多看了一位，使应付货款扩大到10倍，几天后，货主将他多汇的7020元如数退回，则实际应付货款是多少元．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">7_020 / 9</gadget>
<output>780</output>

<result>780</result>